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-rw-r--r--3537/CH1/EX1.1/Ex1_1.sce12
-rw-r--r--3537/CH1/EX1.1/Ex1_1.txt1
-rw-r--r--3537/CH1/EX1.10/Ex1_10.sce11
-rw-r--r--3537/CH1/EX1.10/Ex1_10.txt1
-rw-r--r--3537/CH1/EX1.11/Ex1_11.sce13
-rw-r--r--3537/CH1/EX1.11/Ex1_11.txt1
-rw-r--r--3537/CH1/EX1.12/Ex1_12.sce13
-rw-r--r--3537/CH1/EX1.12/Ex1_12.txt1
-rw-r--r--3537/CH1/EX1.13/Ex1_13.sce11
-rw-r--r--3537/CH1/EX1.13/Ex1_13.txt1
-rw-r--r--3537/CH1/EX1.14/Ex1_14.sce9
-rw-r--r--3537/CH1/EX1.14/Ex1_14.txt1
-rw-r--r--3537/CH1/EX1.15/Ex1_15.sce12
-rw-r--r--3537/CH1/EX1.15/Ex1_15.txt1
-rw-r--r--3537/CH1/EX1.16/Ex1_16.sce20
-rw-r--r--3537/CH1/EX1.16/Ex1_16.txt5
-rw-r--r--3537/CH1/EX1.17/Ex1_17.sce13
-rw-r--r--3537/CH1/EX1.17/Ex1_17.txt1
-rw-r--r--3537/CH1/EX1.18/Ex1_18.sce11
-rw-r--r--3537/CH1/EX1.18/Ex1_18.txt1
-rw-r--r--3537/CH1/EX1.19/Ex1_19.sce8
-rw-r--r--3537/CH1/EX1.19/Ex1_19.txt1
-rw-r--r--3537/CH1/EX1.2/Ex1_2.sce15
-rw-r--r--3537/CH1/EX1.2/Ex1_2.txt1
-rw-r--r--3537/CH1/EX1.20/Ex1_20.sce8
-rw-r--r--3537/CH1/EX1.20/Ex1_20.txt1
-rw-r--r--3537/CH1/EX1.21/Ex1_21.sce10
-rw-r--r--3537/CH1/EX1.21/Ex1_21.txt1
-rw-r--r--3537/CH1/EX1.22/Ex1_22.sce9
-rw-r--r--3537/CH1/EX1.22/Ex1_22.txt1
-rw-r--r--3537/CH1/EX1.23/Ex1_23.sce10
-rw-r--r--3537/CH1/EX1.23/Ex1_23.txt1
-rw-r--r--3537/CH1/EX1.24/Ex1_24.sce10
-rw-r--r--3537/CH1/EX1.24/Ex1_24.txt1
-rw-r--r--3537/CH1/EX1.25/Ex1_25.sce8
-rw-r--r--3537/CH1/EX1.25/Ex1_25.txt1
-rw-r--r--3537/CH1/EX1.26/Ex1_26.sce8
-rw-r--r--3537/CH1/EX1.26/Ex1_26.txt1
-rw-r--r--3537/CH1/EX1.27/Ex1_27.sce20
-rw-r--r--3537/CH1/EX1.27/Ex1_27.txt6
-rw-r--r--3537/CH1/EX1.28/Ex1_28.sce11
-rw-r--r--3537/CH1/EX1.28/Ex1_28.txt1
-rw-r--r--3537/CH1/EX1.29/Ex1_29.sce10
-rw-r--r--3537/CH1/EX1.29/Ex1_29.txt1
-rw-r--r--3537/CH1/EX1.3/Ex1_3.sce19
-rw-r--r--3537/CH1/EX1.3/Ex1_3.txt2
-rw-r--r--3537/CH1/EX1.30/Ex1_30.sce12
-rw-r--r--3537/CH1/EX1.30/Ex1_30.txt1
-rw-r--r--3537/CH1/EX1.31/Ex1_31.sce13
-rw-r--r--3537/CH1/EX1.31/Ex1_31.txt1
-rw-r--r--3537/CH1/EX1.32/Ex1_32.sce11
-rw-r--r--3537/CH1/EX1.32/Ex1_32.txt1
-rw-r--r--3537/CH1/EX1.33/Ex1_33.sce12
-rw-r--r--3537/CH1/EX1.33/Ex1_33.txt1
-rw-r--r--3537/CH1/EX1.34/Ex1_34.sce10
-rw-r--r--3537/CH1/EX1.34/Ex1_34.txt1
-rw-r--r--3537/CH1/EX1.35/Ex1_35.sce11
-rw-r--r--3537/CH1/EX1.35/Ex1_35.txt2
-rw-r--r--3537/CH1/EX1.36/Ex1_36.sce11
-rw-r--r--3537/CH1/EX1.36/Ex1_36.txt1
-rw-r--r--3537/CH1/EX1.37/Ex1_37.sce11
-rw-r--r--3537/CH1/EX1.37/Ex1_37.txt1
-rw-r--r--3537/CH1/EX1.38/Ex1_38.sce10
-rw-r--r--3537/CH1/EX1.38/Ex1_38.txt1
-rw-r--r--3537/CH1/EX1.39/Ex1_39.sce10
-rw-r--r--3537/CH1/EX1.39/Ex1_39.txt1
-rw-r--r--3537/CH1/EX1.4/Ex1_4.sce10
-rw-r--r--3537/CH1/EX1.4/Ex1_4.txt1
-rw-r--r--3537/CH1/EX1.40/Ex1_40.sce10
-rw-r--r--3537/CH1/EX1.40/Ex1_40.txt1
-rw-r--r--3537/CH1/EX1.41/Ex1_41.sce10
-rw-r--r--3537/CH1/EX1.41/Ex1_41.txt1
-rw-r--r--3537/CH1/EX1.42/Ex1_42.sce10
-rw-r--r--3537/CH1/EX1.42/Ex1_42.txt1
-rw-r--r--3537/CH1/EX1.43/Ex1_43.sce10
-rw-r--r--3537/CH1/EX1.43/Ex1_43.txt1
-rw-r--r--3537/CH1/EX1.44/Ex1_44.sce9
-rw-r--r--3537/CH1/EX1.44/Ex1_44.txt1
-rw-r--r--3537/CH1/EX1.45/Ex1_45.sce10
-rw-r--r--3537/CH1/EX1.45/Ex1_45.txt1
-rw-r--r--3537/CH1/EX1.46/Ex1_46.sce11
-rw-r--r--3537/CH1/EX1.46/Ex1_46.txt1
-rw-r--r--3537/CH1/EX1.47/Ex1_47.sce10
-rw-r--r--3537/CH1/EX1.47/Ex1_47.txt1
-rw-r--r--3537/CH1/EX1.48/Ex1_48.sce8
-rw-r--r--3537/CH1/EX1.48/Ex1_48.txt1
-rw-r--r--3537/CH1/EX1.49/Ex1_49.sce12
-rw-r--r--3537/CH1/EX1.49/Ex1_49.txt1
-rw-r--r--3537/CH1/EX1.5/Ex1_5.sce10
-rw-r--r--3537/CH1/EX1.5/Ex1_5.txt1
-rw-r--r--3537/CH1/EX1.50/Ex1_50.sce12
-rw-r--r--3537/CH1/EX1.50/Ex1_50.txt1
-rw-r--r--3537/CH1/EX1.51/Ex1_51.sce8
-rw-r--r--3537/CH1/EX1.51/Ex1_51.txt1
-rw-r--r--3537/CH1/EX1.52/Ex1_52.sce9
-rw-r--r--3537/CH1/EX1.52/Ex1_52.txt1
-rw-r--r--3537/CH1/EX1.53/Ex1_53.sce14
-rw-r--r--3537/CH1/EX1.53/Ex1_53.txt1
-rw-r--r--3537/CH1/EX1.54/Ex1_54.sce10
-rw-r--r--3537/CH1/EX1.54/Ex1_54.txt1
-rw-r--r--3537/CH1/EX1.6/Ex1_6.sce15
-rw-r--r--3537/CH1/EX1.6/Ex1_6.txt1
-rw-r--r--3537/CH1/EX1.7/Ex1_7.sce12
-rw-r--r--3537/CH1/EX1.7/Ex1_7.txt1
-rw-r--r--3537/CH1/EX1.8/Ex1_8.sce21
-rw-r--r--3537/CH1/EX1.8/Ex1_8.txt3
-rw-r--r--3537/CH1/EX1.9/Ex1_9.sce16
-rw-r--r--3537/CH1/EX1.9/Ex1_9.txt2
108 files changed, 687 insertions, 0 deletions
diff --git a/3537/CH1/EX1.1/Ex1_1.sce b/3537/CH1/EX1.1/Ex1_1.sce
new file mode 100644
index 000000000..009d996e8
--- /dev/null
+++ b/3537/CH1/EX1.1/Ex1_1.sce
@@ -0,0 +1,12 @@
+//Example 1_1
+clc();
+clear;
+//To calculate the location of screen from slits
+d=0.08 //units in cm
+d=d*10^-2 //units in mts
+betaa=6*10^-4 //units in mts
+v=8*10^11 //units in kHz
+c=3*10^8 //units in mts
+lamda=c/(v*10^3) //units in mts
+d=(betaa*d)/lamda //units in mts
+printf("The distance of the screen from the slits is %.2fmts",d)
diff --git a/3537/CH1/EX1.1/Ex1_1.txt b/3537/CH1/EX1.1/Ex1_1.txt
new file mode 100644
index 000000000..877edc1aa
--- /dev/null
+++ b/3537/CH1/EX1.1/Ex1_1.txt
@@ -0,0 +1 @@
+ The distance of the screen from the slits is 1.28mts \ No newline at end of file
diff --git a/3537/CH1/EX1.10/Ex1_10.sce b/3537/CH1/EX1.10/Ex1_10.sce
new file mode 100644
index 000000000..7f2dafb96
--- /dev/null
+++ b/3537/CH1/EX1.10/Ex1_10.sce
@@ -0,0 +1,11 @@
+//Example 1_10
+clc();
+clear;
+//To Find the thickness of the glass plate
+lamda=4800 //units in Angstrom
+lamda=4800*10^-10 //units in mts
+n=5
+u1=1.4 //first refractive index
+u2=1.7 //second refractive index
+t=(n*lamda)/(u2-u1) //units in mts
+printf("thickness of glass plate is %f mts",t)
diff --git a/3537/CH1/EX1.10/Ex1_10.txt b/3537/CH1/EX1.10/Ex1_10.txt
new file mode 100644
index 000000000..b62290625
--- /dev/null
+++ b/3537/CH1/EX1.10/Ex1_10.txt
@@ -0,0 +1 @@
+thickness of glass plate is 0.000008 mts \ No newline at end of file
diff --git a/3537/CH1/EX1.11/Ex1_11.sce b/3537/CH1/EX1.11/Ex1_11.sce
new file mode 100644
index 000000000..ad3b8ce41
--- /dev/null
+++ b/3537/CH1/EX1.11/Ex1_11.sce
@@ -0,0 +1,13 @@
+//Example 1_11
+clc();
+clear;
+//To find the refractive index of oil
+v=0.2 //units in cm
+area=1 //units in m^2
+area=area*10^4 //units in cm^2
+t=v/area //units in cm
+n=1
+lamda=5.5*10^-5 //units in cm
+r=0 //units in degrees
+u=(n*lamda)/(2*t*cos(r))
+printf("Refractive index of oil is u=%.2f",u)
diff --git a/3537/CH1/EX1.11/Ex1_11.txt b/3537/CH1/EX1.11/Ex1_11.txt
new file mode 100644
index 000000000..160ebbd88
--- /dev/null
+++ b/3537/CH1/EX1.11/Ex1_11.txt
@@ -0,0 +1 @@
+Refractive index of oil is u=1.38 \ No newline at end of file
diff --git a/3537/CH1/EX1.12/Ex1_12.sce b/3537/CH1/EX1.12/Ex1_12.sce
new file mode 100644
index 000000000..d9d8202fe
--- /dev/null
+++ b/3537/CH1/EX1.12/Ex1_12.sce
@@ -0,0 +1,13 @@
+//Example 1_13
+clc();
+clear;
+//To calculate the fringe width
+dist1=0.005 //units in mm
+dist2=15 //units in cm
+alpha=dist1/dist2 //units in radians
+lamda=6000*10^-9 //units in cm
+betaa=(lamda)/(2*alpha) //units in
+
+printf("Fringe width beta=%.3fcm",betaa)
+
+//In text book answer is printed wrong as 0.09 cm answer is 0.009 cm
diff --git a/3537/CH1/EX1.12/Ex1_12.txt b/3537/CH1/EX1.12/Ex1_12.txt
new file mode 100644
index 000000000..2dfb2d9b1
--- /dev/null
+++ b/3537/CH1/EX1.12/Ex1_12.txt
@@ -0,0 +1 @@
+Fringe width beta=0.009cm \ No newline at end of file
diff --git a/3537/CH1/EX1.13/Ex1_13.sce b/3537/CH1/EX1.13/Ex1_13.sce
new file mode 100644
index 000000000..c46d18215
--- /dev/null
+++ b/3537/CH1/EX1.13/Ex1_13.sce
@@ -0,0 +1,11 @@
+//Example 1_13
+clc();
+clear;
+//To calculate the fringe width
+D=0.005 //units in mm
+d=15 //units in cm
+lemda=6000 //units in angstroam
+lemda=6000*10^-8 //units in cm
+alpha=D/d //units in radians
+beta=lemda/(2*alpha)
+printf("fringe width is %.2f cm",beta)
diff --git a/3537/CH1/EX1.13/Ex1_13.txt b/3537/CH1/EX1.13/Ex1_13.txt
new file mode 100644
index 000000000..8cc21ffd8
--- /dev/null
+++ b/3537/CH1/EX1.13/Ex1_13.txt
@@ -0,0 +1 @@
+fringe width is 0.09 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.14/Ex1_14.sce b/3537/CH1/EX1.14/Ex1_14.sce
new file mode 100644
index 000000000..c4a7b5ec2
--- /dev/null
+++ b/3537/CH1/EX1.14/Ex1_14.sce
@@ -0,0 +1,9 @@
+//Example 1_14
+clc();
+clear;
+//To calculate the distance from the fringe
+n=10
+lamda=6000*10^-10 //units in mts
+alpha=0.01
+x=(((2*n)-1)*lamda)/(4*alpha) //units in mts
+printf("Distance from 10th fringe is %.6f mts",x)
diff --git a/3537/CH1/EX1.14/Ex1_14.txt b/3537/CH1/EX1.14/Ex1_14.txt
new file mode 100644
index 000000000..85c12de12
--- /dev/null
+++ b/3537/CH1/EX1.14/Ex1_14.txt
@@ -0,0 +1 @@
+Distance from 10th fringe is 0.000285 mts \ No newline at end of file
diff --git a/3537/CH1/EX1.15/Ex1_15.sce b/3537/CH1/EX1.15/Ex1_15.sce
new file mode 100644
index 000000000..1b1bc836b
--- /dev/null
+++ b/3537/CH1/EX1.15/Ex1_15.sce
@@ -0,0 +1,12 @@
+//Example 1_15
+clc();
+clear;
+//To find the diameter of the 5th bright ring
+n=5
+lemda=5460 //units in angstroam
+lemda=5460*10^-8 //units in cm
+u=1.50
+f=400 //units in cm
+R=(u-1)*2*f
+D=sqrt(2*(2*n-1)*lemda*R)
+printf("The diameter of the 5th fringe %.2f mts",D)
diff --git a/3537/CH1/EX1.15/Ex1_15.txt b/3537/CH1/EX1.15/Ex1_15.txt
new file mode 100644
index 000000000..25b002537
--- /dev/null
+++ b/3537/CH1/EX1.15/Ex1_15.txt
@@ -0,0 +1 @@
+The diameter of the 5th fringe 0.63 mts \ No newline at end of file
diff --git a/3537/CH1/EX1.16/Ex1_16.sce b/3537/CH1/EX1.16/Ex1_16.sce
new file mode 100644
index 000000000..6f613cd4e
--- /dev/null
+++ b/3537/CH1/EX1.16/Ex1_16.sce
@@ -0,0 +1,20 @@
+//Example 1_16
+clc();
+clear;
+//To find the wavelength in the visible region
+u=1.33
+t=500 //units in angstroam
+t=500*10^-10 //units in mts
+n=0 //when n=0
+lemda1=(4*u*t)/((2*n)+1)
+printf("when n=0 then lemda1 is %.11f mts",lemda1)
+n=1 //when n=1
+lemda2=(4*u*t)/((2*n)+1)
+printf("\nwhen n=1 then lemda2 is %.11f mts",lemda2)
+n=2 //when n=1
+lemda3=(4*u*t)/((2*n)+1)
+printf("\n when n=2 then lemda3 is %.11f mts",lemda3)
+n=3 //when n=1
+lemda4=(4*u*t)/((2*n)+1)
+printf("\n when n=3 then lemda4 is %.11f mts",lemda4)
+printf("\n Of all the wavelengths reflected in the visible region is %.11f mts",lemda3)
diff --git a/3537/CH1/EX1.16/Ex1_16.txt b/3537/CH1/EX1.16/Ex1_16.txt
new file mode 100644
index 000000000..31d34de88
--- /dev/null
+++ b/3537/CH1/EX1.16/Ex1_16.txt
@@ -0,0 +1,5 @@
+when n=0 then lemda1 is 0.00000026600 mts
+when n=1 then lemda2 is 0.00000008867 mts
+ when n=2 then lemda3 is 0.00000005320 mts
+ when n=3 then lemda4 is 0.00000003800 mts
+ Of all the wavelengths reflected in the visible region is 0.00000005320 mts \ No newline at end of file
diff --git a/3537/CH1/EX1.17/Ex1_17.sce b/3537/CH1/EX1.17/Ex1_17.sce
new file mode 100644
index 000000000..5789c68c8
--- /dev/null
+++ b/3537/CH1/EX1.17/Ex1_17.sce
@@ -0,0 +1,13 @@
+//Example 1_17
+clc();
+clear;
+//To calculate the order of interference of the dark band
+t=1.5*10^-6 //units in cm
+lemda=5*10^-7 //units in cm
+i=60 //units in degree
+u=1.33
+r=asin((sin(i*%pi/180))/u)*(180/%pi) //units in degree
+n=(2*u*t*cos(r*%pi/180))/lemda
+printf("The order of interference of the dark band is %.0f",n)
+//In this question,the thickness and lemda values are given wrong
+//To get the answer i have followed the values that are taken in the answer
diff --git a/3537/CH1/EX1.17/Ex1_17.txt b/3537/CH1/EX1.17/Ex1_17.txt
new file mode 100644
index 000000000..8ee2cc5e9
--- /dev/null
+++ b/3537/CH1/EX1.17/Ex1_17.txt
@@ -0,0 +1 @@
+ The order of interference of the dark band is 6 \ No newline at end of file
diff --git a/3537/CH1/EX1.18/Ex1_18.sce b/3537/CH1/EX1.18/Ex1_18.sce
new file mode 100644
index 000000000..af0ca4004
--- /dev/null
+++ b/3537/CH1/EX1.18/Ex1_18.sce
@@ -0,0 +1,11 @@
+//Example 1_18
+clc();
+clear;
+//To calculate the smallest thickness of the plate
+lemda=5890 //units in angstroam
+lemda=5890*10^-10 //units in mts
+u=1.5
+n=1
+r=60 //units in degree
+t=(n*lemda)/(2*u*cos(r*%pi/180))*10^10
+printf("Thickness of the glass plate is %.0f angstroam",t)
diff --git a/3537/CH1/EX1.18/Ex1_18.txt b/3537/CH1/EX1.18/Ex1_18.txt
new file mode 100644
index 000000000..a7c2fcf4b
--- /dev/null
+++ b/3537/CH1/EX1.18/Ex1_18.txt
@@ -0,0 +1 @@
+Thickness of the glass plate is 3927 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.19/Ex1_19.sce b/3537/CH1/EX1.19/Ex1_19.sce
new file mode 100644
index 000000000..2a6cd2b14
--- /dev/null
+++ b/3537/CH1/EX1.19/Ex1_19.sce
@@ -0,0 +1,8 @@
+//Example 1_19
+clc();
+clear;
+//To find the diameter of 20th ring
+D4=0.4 //units in cm
+D12=0.7 //units in cm
+D20=sqrt(2*(D12^2-D4^2)+D4^2)
+printf("The diameter of the 20th dark ring is %.4f cm",D20)
diff --git a/3537/CH1/EX1.19/Ex1_19.txt b/3537/CH1/EX1.19/Ex1_19.txt
new file mode 100644
index 000000000..fb25eebaa
--- /dev/null
+++ b/3537/CH1/EX1.19/Ex1_19.txt
@@ -0,0 +1 @@
+ The diameter of the 20th dark ring is 0.9055 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.2/Ex1_2.sce b/3537/CH1/EX1.2/Ex1_2.sce
new file mode 100644
index 000000000..a18a4f976
--- /dev/null
+++ b/3537/CH1/EX1.2/Ex1_2.sce
@@ -0,0 +1,15 @@
+//Example 1_2
+clc();
+clear;
+//To calculate the wavelength
+//First case to calculte the wavelengths of the light source to obtain fringes 0.46*10^-2 mts
+lamda1=4200 //units in armstrongs
+lamda1=lamda1*10^-10 //units in mts
+betaa=0.64*10^-2 //units in mts
+D_d=betaa/lamda1 //units in mts
+//Second caseDistance between slits and screen is reduced to half
+beeta1=0.46*10^-2 //units in mts
+lamdaD_d=beeta1*2 //units in mts
+lamda=(lamda1*lamdaD_d)/betaa //units in mts
+lamda=lamda*10^10 //units in armstrongs
+printf("The wavelength of the Light source is %.1fArmstrongs",lamda)
diff --git a/3537/CH1/EX1.2/Ex1_2.txt b/3537/CH1/EX1.2/Ex1_2.txt
new file mode 100644
index 000000000..924cad728
--- /dev/null
+++ b/3537/CH1/EX1.2/Ex1_2.txt
@@ -0,0 +1 @@
+The wavelength of the Light source is 6037.5Armstrongs \ No newline at end of file
diff --git a/3537/CH1/EX1.20/Ex1_20.sce b/3537/CH1/EX1.20/Ex1_20.sce
new file mode 100644
index 000000000..caec42e79
--- /dev/null
+++ b/3537/CH1/EX1.20/Ex1_20.sce
@@ -0,0 +1,8 @@
+//Example 1_20
+clc();
+clear;
+//To calculate the refractive index of the liquid
+D10=1.40 //units in cm
+d10=1.27 //units in cm
+u=D10^2/d10^2
+printf("Refractive index of the liquid is %.3f",u)
diff --git a/3537/CH1/EX1.20/Ex1_20.txt b/3537/CH1/EX1.20/Ex1_20.txt
new file mode 100644
index 000000000..5648548c9
--- /dev/null
+++ b/3537/CH1/EX1.20/Ex1_20.txt
@@ -0,0 +1 @@
+Refractive index of the liquid is 1.215 \ No newline at end of file
diff --git a/3537/CH1/EX1.21/Ex1_21.sce b/3537/CH1/EX1.21/Ex1_21.sce
new file mode 100644
index 000000000..9f534ac7f
--- /dev/null
+++ b/3537/CH1/EX1.21/Ex1_21.sce
@@ -0,0 +1,10 @@
+//Example 1_21
+clc();
+clear;
+//To find the wavelength of light used
+D5=0.3 //units in cm
+D25=0.8 //units in cm
+R=100 //units in cm
+P=20
+lemda=(D25^2-D5^2)/(4*P*R)
+printf("The wavelength of the light used is %f cm",lemda)
diff --git a/3537/CH1/EX1.21/Ex1_21.txt b/3537/CH1/EX1.21/Ex1_21.txt
new file mode 100644
index 000000000..02c460cec
--- /dev/null
+++ b/3537/CH1/EX1.21/Ex1_21.txt
@@ -0,0 +1 @@
+The wavelength of the light used is 0.000069 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.22/Ex1_22.sce b/3537/CH1/EX1.22/Ex1_22.sce
new file mode 100644
index 000000000..c78e08ef1
--- /dev/null
+++ b/3537/CH1/EX1.22/Ex1_22.sce
@@ -0,0 +1,9 @@
+//Example 1_22
+clc();
+clear;
+//To calculate the number of lines
+theta=18.233 //units in degrees
+n=1
+lamda=6.56*10^-7 //units in meters
+m=(0.02*sin(theta*%pi/180))/(n*lamda)
+printf("Number of lines M=%d",m)
diff --git a/3537/CH1/EX1.22/Ex1_22.txt b/3537/CH1/EX1.22/Ex1_22.txt
new file mode 100644
index 000000000..7c2c59355
--- /dev/null
+++ b/3537/CH1/EX1.22/Ex1_22.txt
@@ -0,0 +1 @@
+Number of lines M=9539 \ No newline at end of file
diff --git a/3537/CH1/EX1.23/Ex1_23.sce b/3537/CH1/EX1.23/Ex1_23.sce
new file mode 100644
index 000000000..301fcb2f5
--- /dev/null
+++ b/3537/CH1/EX1.23/Ex1_23.sce
@@ -0,0 +1,10 @@
+//Example 1_23
+clc();
+clear;
+//To calculate the smallest thickness of the plate
+lemda=5890 //units in angstroam
+lemda=5890*10^-10 //units in mts
+u=1.5
+r=60 //units in degrees
+t=lemda/(2*u*cos(r*%pi/180))*10^10
+printf("The smallest thickness of the plate %.0f angstroam",t)
diff --git a/3537/CH1/EX1.23/Ex1_23.txt b/3537/CH1/EX1.23/Ex1_23.txt
new file mode 100644
index 000000000..9a207f5fc
--- /dev/null
+++ b/3537/CH1/EX1.23/Ex1_23.txt
@@ -0,0 +1 @@
+ The smallest thickness of the plate 3927 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.24/Ex1_24.sce b/3537/CH1/EX1.24/Ex1_24.sce
new file mode 100644
index 000000000..57fb10b48
--- /dev/null
+++ b/3537/CH1/EX1.24/Ex1_24.sce
@@ -0,0 +1,10 @@
+//Example 1_24
+clc();
+clear;
+//To calculate the refractive index of the liquid
+lemda=5.895*10^-7 //units in mts
+D=0.3*10^-2 //units in mts
+R=1 //units in mts
+n=5
+u=(4*R*n*lemda)/D^2
+printf("The reractive index of the liquid is %.2f",u)
diff --git a/3537/CH1/EX1.24/Ex1_24.txt b/3537/CH1/EX1.24/Ex1_24.txt
new file mode 100644
index 000000000..5beb55d87
--- /dev/null
+++ b/3537/CH1/EX1.24/Ex1_24.txt
@@ -0,0 +1 @@
+ The reractive index of the liquid is 1.31 \ No newline at end of file
diff --git a/3537/CH1/EX1.25/Ex1_25.sce b/3537/CH1/EX1.25/Ex1_25.sce
new file mode 100644
index 000000000..a055c32e0
--- /dev/null
+++ b/3537/CH1/EX1.25/Ex1_25.sce
@@ -0,0 +1,8 @@
+//Example 1_25
+clc();
+clear;
+//To find the value of the slit width
+lemda=6500 //units in angstroam
+theta=30 //units in degrees
+a=lemda/sin(theta*%pi/180)
+printf("The value of the slit is %.0f angstroam",a)
diff --git a/3537/CH1/EX1.25/Ex1_25.txt b/3537/CH1/EX1.25/Ex1_25.txt
new file mode 100644
index 000000000..02a945961
--- /dev/null
+++ b/3537/CH1/EX1.25/Ex1_25.txt
@@ -0,0 +1 @@
+The value of the slit is 13000 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.26/Ex1_26.sce b/3537/CH1/EX1.26/Ex1_26.sce
new file mode 100644
index 000000000..267deed4c
--- /dev/null
+++ b/3537/CH1/EX1.26/Ex1_26.sce
@@ -0,0 +1,8 @@
+//Example 1_26
+clc();
+clear;
+//tofind the amplitude of the resultant wave
+pathdifference=1/4 //in terns of lamda
+phasedifference=(2*%pi)*pathdifference //In terms of lamda
+amplitude=2*cos(phasedifference/2) //in terms of a
+printf("Amplitude A=%.3f*a",amplitude)
diff --git a/3537/CH1/EX1.26/Ex1_26.txt b/3537/CH1/EX1.26/Ex1_26.txt
new file mode 100644
index 000000000..cde9f532d
--- /dev/null
+++ b/3537/CH1/EX1.26/Ex1_26.txt
@@ -0,0 +1 @@
+ Amplitude A=1.414*a \ No newline at end of file
diff --git a/3537/CH1/EX1.27/Ex1_27.sce b/3537/CH1/EX1.27/Ex1_27.sce
new file mode 100644
index 000000000..117f8e912
--- /dev/null
+++ b/3537/CH1/EX1.27/Ex1_27.sce
@@ -0,0 +1,20 @@
+//Example 1_27
+clc();
+clear;
+//To find the wavelength in the visible region
+t=5000 //units in angstroam
+t=5000*10^-10 //units in mts
+u=1.33
+n=0 //let us take n=0
+lemda=(4*u*t)/(2*n+1)
+printf("The wavelength in the infrared region is %.10f",lemda)
+n=1 //let us take n=1
+lemda1=(4*u*t)/(2*n+1)
+printf("\n The wavelength in the IR region is %.10f",lemda1)
+n=2 //let us take n=2
+lemda3=(4*u*t)/(2*n+1)
+printf("\n The wavelength in the visible region is %.10f",lemda3)
+n=3 //let us take n=3
+lemda4=(4*u*t)/(2*n+1)
+printf("\n The wavelength in the UV region is %.10f",lemda4)
+printf("\n\n In all wavelengths reflacted The wavelength in the visible region %.10f",lemda3)
diff --git a/3537/CH1/EX1.27/Ex1_27.txt b/3537/CH1/EX1.27/Ex1_27.txt
new file mode 100644
index 000000000..56a601482
--- /dev/null
+++ b/3537/CH1/EX1.27/Ex1_27.txt
@@ -0,0 +1,6 @@
+ The wavelength in the infrared region is 0.0000026600
+ The wavelength in the IR region is 0.0000008867
+ The wavelength in the visible region is 0.0000005320
+ The wavelength in the UV region is 0.0000003800
+
+ In all wavelengths reflacted The wavelength in the visible region 0.0000005320 \ No newline at end of file
diff --git a/3537/CH1/EX1.28/Ex1_28.sce b/3537/CH1/EX1.28/Ex1_28.sce
new file mode 100644
index 000000000..162af1a61
--- /dev/null
+++ b/3537/CH1/EX1.28/Ex1_28.sce
@@ -0,0 +1,11 @@
+//Example 1_28
+clc();
+clear;
+//To calculate the order of interference of the dark fringe
+u=1.33
+t=1.5*10^-4 //units in cm
+i=60 //units in degrees
+lemda=5*10^-5 //units in cm
+r=asin(sin(60*%pi/180)/u)*180/%pi
+n=(2*u*t*cos(r*%pi/180))/lemda
+printf("The order of interface of the dark fringe is %.0f",n)
diff --git a/3537/CH1/EX1.28/Ex1_28.txt b/3537/CH1/EX1.28/Ex1_28.txt
new file mode 100644
index 000000000..2637a8221
--- /dev/null
+++ b/3537/CH1/EX1.28/Ex1_28.txt
@@ -0,0 +1 @@
+The order of interface of the dark fringe is 6 \ No newline at end of file
diff --git a/3537/CH1/EX1.29/Ex1_29.sce b/3537/CH1/EX1.29/Ex1_29.sce
new file mode 100644
index 000000000..490be0ddc
--- /dev/null
+++ b/3537/CH1/EX1.29/Ex1_29.sce
@@ -0,0 +1,10 @@
+//Example 1_29
+clc();
+clear;
+//To calculate the smallest thickness of the plate
+lemda=5890 //units in angstroam
+//lemda=5890*10^-10 //units in mts
+u=1.5
+r=60 //units in degrees
+t=lemda/(2*u*cos(r*%pi/180))
+printf("The smallest thickness of the plate is %.0f angstroam",t)
diff --git a/3537/CH1/EX1.29/Ex1_29.txt b/3537/CH1/EX1.29/Ex1_29.txt
new file mode 100644
index 000000000..8552207b2
--- /dev/null
+++ b/3537/CH1/EX1.29/Ex1_29.txt
@@ -0,0 +1 @@
+The smallest thickness of the plate is 3927 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.3/Ex1_3.sce b/3537/CH1/EX1.3/Ex1_3.sce
new file mode 100644
index 000000000..f6188eb32
--- /dev/null
+++ b/3537/CH1/EX1.3/Ex1_3.sce
@@ -0,0 +1,19 @@
+//Example 1_3
+clc;
+clear;
+//To compare the intensity at a point distance 1mm from the center to that at its center and to find minimum dist from center of point
+//Path difference=(Y*d)/D
+y=1 //units in mm
+y=y*10^-3 //units in mts
+D=1 //units in mts
+d=1 //units in mm
+d=d*10^-3 //units in mts
+pathdifference=(y*d)/D //units in mts
+lamda=5893 //units in armstrongs
+lamda=lamda*10^-10 //units in mts
+phasedifference=(2*pathdifference)/lamda //units in pi radians
+ratioofintensity=(cos((phasedifference/2)*%pi))^2
+printf("The ratio of intensity with central maximum is %.4f\n",ratioofintensity)
+pathdifference=lamda/4
+distance=(pathdifference*D)/d //units in mts
+printf("The Distance of the point on the screen from center is %fmts",distance) \ No newline at end of file
diff --git a/3537/CH1/EX1.3/Ex1_3.txt b/3537/CH1/EX1.3/Ex1_3.txt
new file mode 100644
index 000000000..9a5c604aa
--- /dev/null
+++ b/3537/CH1/EX1.3/Ex1_3.txt
@@ -0,0 +1,2 @@
+The ratio of intensity with central maximum is 0.3363
+The Distance of the point on the screen from center is 0.000147mts \ No newline at end of file
diff --git a/3537/CH1/EX1.30/Ex1_30.sce b/3537/CH1/EX1.30/Ex1_30.sce
new file mode 100644
index 000000000..e5951d0d0
--- /dev/null
+++ b/3537/CH1/EX1.30/Ex1_30.sce
@@ -0,0 +1,12 @@
+//Example 1_30
+clc();
+clear;
+//To calculate the thickness of air film
+lemda=500 //units in nanometers
+lemda=500*10^-9 //units in meters
+n=10
+D=2 //units in millimeters
+D=2*10-3 //units in meters
+R=D^2/(4*n*lemda) //units in meters
+t=(D^2/(8*R))*10^6
+printf("Thickness of air film is %.1f micrometers",t)
diff --git a/3537/CH1/EX1.30/Ex1_30.txt b/3537/CH1/EX1.30/Ex1_30.txt
new file mode 100644
index 000000000..ffe89e33e
--- /dev/null
+++ b/3537/CH1/EX1.30/Ex1_30.txt
@@ -0,0 +1 @@
+ Thickness of air film is 2.5 micrometers \ No newline at end of file
diff --git a/3537/CH1/EX1.31/Ex1_31.sce b/3537/CH1/EX1.31/Ex1_31.sce
new file mode 100644
index 000000000..ab0038657
--- /dev/null
+++ b/3537/CH1/EX1.31/Ex1_31.sce
@@ -0,0 +1,13 @@
+//Example 1_30
+clc();
+clear;
+//To find the wavelength of the light
+D5=0.336 //units in centimeters
+D5=0.336*10^-2 //units in meters
+D15=0.59 //units in centimeters
+D15=0.59*10^-2 //units in meters
+m=10
+R=100 //units in centimeters
+R=100*10^-2 //units in meters
+lemda=((D15^2-D5^2)/(4*m*R))*10^9
+printf("Wavelength of the light is %.0f nanometers",lemda)
diff --git a/3537/CH1/EX1.31/Ex1_31.txt b/3537/CH1/EX1.31/Ex1_31.txt
new file mode 100644
index 000000000..f8cc9dc6a
--- /dev/null
+++ b/3537/CH1/EX1.31/Ex1_31.txt
@@ -0,0 +1 @@
+ Wavelength of the light is 588 nanometers \ No newline at end of file
diff --git a/3537/CH1/EX1.32/Ex1_32.sce b/3537/CH1/EX1.32/Ex1_32.sce
new file mode 100644
index 000000000..33b2dc8a7
--- /dev/null
+++ b/3537/CH1/EX1.32/Ex1_32.sce
@@ -0,0 +1,11 @@
+//Example 1_32
+clc();
+clear;
+//To find the radius of curvature of the lens
+lemda=5900 //units in angstroam
+lemda=5900*10^-10 //units in meters
+D=0.5 //units in centimeters
+D=0.5*10^-2 //units in meters
+n=10
+R=D^2/(4*n*lemda)
+printf("The radius of the curvature of lens is %.3f meters",R)
diff --git a/3537/CH1/EX1.32/Ex1_32.txt b/3537/CH1/EX1.32/Ex1_32.txt
new file mode 100644
index 000000000..d442c4fcc
--- /dev/null
+++ b/3537/CH1/EX1.32/Ex1_32.txt
@@ -0,0 +1 @@
+The radius of the curvature of lens is 1.059 meters \ No newline at end of file
diff --git a/3537/CH1/EX1.33/Ex1_33.sce b/3537/CH1/EX1.33/Ex1_33.sce
new file mode 100644
index 000000000..a1b223cc7
--- /dev/null
+++ b/3537/CH1/EX1.33/Ex1_33.sce
@@ -0,0 +1,12 @@
+//Example 1_33
+clc();
+clear;
+//To calculate the refractive index of the liquid
+lemda=5.895*10^-7 //units in meters
+D=0.3 //units in centimeters
+D=0.3*10^-2 //units in meters
+R=100 //units in centimeters
+R=100*10^-2 //units in meters
+n=5
+u=(4*R*n*lemda)/D^2
+printf("The refractive index of the liquid is %.3f",u)
diff --git a/3537/CH1/EX1.33/Ex1_33.txt b/3537/CH1/EX1.33/Ex1_33.txt
new file mode 100644
index 000000000..903a5d4da
--- /dev/null
+++ b/3537/CH1/EX1.33/Ex1_33.txt
@@ -0,0 +1 @@
+ The refractive index of the liquid is 1.310 \ No newline at end of file
diff --git a/3537/CH1/EX1.34/Ex1_34.sce b/3537/CH1/EX1.34/Ex1_34.sce
new file mode 100644
index 000000000..24ff6bf2d
--- /dev/null
+++ b/3537/CH1/EX1.34/Ex1_34.sce
@@ -0,0 +1,10 @@
+//Example 1_34
+clc();
+clear;
+//To calculate the refractive index of the liquid
+D1=1.40 //units in centimeters
+D1=1.40*10^-2 //units in meters
+D2=1.27 //units in centimeters
+D2=1.27*10^-2 //units in meters
+u=(D1/D2)^2
+printf("Refractive index of the liquid is %.3f",u)
diff --git a/3537/CH1/EX1.34/Ex1_34.txt b/3537/CH1/EX1.34/Ex1_34.txt
new file mode 100644
index 000000000..d982a4251
--- /dev/null
+++ b/3537/CH1/EX1.34/Ex1_34.txt
@@ -0,0 +1 @@
+Refractive index of the liquid is 1.215 \ No newline at end of file
diff --git a/3537/CH1/EX1.35/Ex1_35.sce b/3537/CH1/EX1.35/Ex1_35.sce
new file mode 100644
index 000000000..f8ecbd564
--- /dev/null
+++ b/3537/CH1/EX1.35/Ex1_35.sce
@@ -0,0 +1,11 @@
+//Example 1_35
+clc();
+clear;
+//To calculate the intensity ratio of the bright and dark fringes
+I1=1
+I2=25
+A1=sqrt(I1)
+A2=sqrt(I2)
+Imax=(A1+A2)^2
+Imin=(A2-A1)^2
+printf("The intensity ratio is \n\t Imax:Imin %d:%d",Imax,Imin)
diff --git a/3537/CH1/EX1.35/Ex1_35.txt b/3537/CH1/EX1.35/Ex1_35.txt
new file mode 100644
index 000000000..21fa6fff9
--- /dev/null
+++ b/3537/CH1/EX1.35/Ex1_35.txt
@@ -0,0 +1,2 @@
+The intensity ratio is
+ Imax:Imin 36:16 \ No newline at end of file
diff --git a/3537/CH1/EX1.36/Ex1_36.sce b/3537/CH1/EX1.36/Ex1_36.sce
new file mode 100644
index 000000000..d46d8c612
--- /dev/null
+++ b/3537/CH1/EX1.36/Ex1_36.sce
@@ -0,0 +1,11 @@
+//Example 1_36
+clc();
+clear;
+//To find the order which will be visible at this point
+lemda1=6000 //units in angstroam
+lemda1=6000*10^-8 //units in cm
+lemda2=4500 //units in angstroam
+lemda2=4500*10^-8 //units in cm
+n1=21
+n2=(n1*lemda1)/lemda2
+printf("The order is %.0f",n2)
diff --git a/3537/CH1/EX1.36/Ex1_36.txt b/3537/CH1/EX1.36/Ex1_36.txt
new file mode 100644
index 000000000..d972c3d6c
--- /dev/null
+++ b/3537/CH1/EX1.36/Ex1_36.txt
@@ -0,0 +1 @@
+The order is 28 \ No newline at end of file
diff --git a/3537/CH1/EX1.37/Ex1_37.sce b/3537/CH1/EX1.37/Ex1_37.sce
new file mode 100644
index 000000000..3e2b1b3fe
--- /dev/null
+++ b/3537/CH1/EX1.37/Ex1_37.sce
@@ -0,0 +1,11 @@
+//Example 1_37
+clc();
+clear;
+//To find the separation between the slits
+lemda=5100 //units in angstroam
+lemda=5100*10^-8 //units in cm
+D=200 //units in cm
+betaa=0.01 //units in mts
+betaa=0.01*10^-3 //units in cm
+d=(lemda*D)/betaa*10^-3
+printf("The separation between the slits is %.2f mts",d)
diff --git a/3537/CH1/EX1.37/Ex1_37.txt b/3537/CH1/EX1.37/Ex1_37.txt
new file mode 100644
index 000000000..07f8be986
--- /dev/null
+++ b/3537/CH1/EX1.37/Ex1_37.txt
@@ -0,0 +1 @@
+ The separation between the slits is 1.02 mts \ No newline at end of file
diff --git a/3537/CH1/EX1.38/Ex1_38.sce b/3537/CH1/EX1.38/Ex1_38.sce
new file mode 100644
index 000000000..fb88cca24
--- /dev/null
+++ b/3537/CH1/EX1.38/Ex1_38.sce
@@ -0,0 +1,10 @@
+//Example 1_38
+clc();
+clear;
+//To calculate the thickness of the mica sheet
+d=0.1 //units in cm
+D=50 //units in cm
+u=1.58
+x=0.2 //units in cm
+t=(x*d)/(D*(u-1))
+printf("The thickness of the mica sheet is %.6f cm",t)
diff --git a/3537/CH1/EX1.38/Ex1_38.txt b/3537/CH1/EX1.38/Ex1_38.txt
new file mode 100644
index 000000000..1e7cf9e52
--- /dev/null
+++ b/3537/CH1/EX1.38/Ex1_38.txt
@@ -0,0 +1 @@
+The thickness of the mica sheet is 0.000690 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.39/Ex1_39.sce b/3537/CH1/EX1.39/Ex1_39.sce
new file mode 100644
index 000000000..1d50ec4fa
--- /dev/null
+++ b/3537/CH1/EX1.39/Ex1_39.sce
@@ -0,0 +1,10 @@
+//Example 1_39
+clc();
+clear;
+//To calculate the fringe width
+lemda=5000 //units in angstroam
+lemda=5000*10^-8 //units in cm
+d=0.05 //units in cm
+D=50 //units in cm
+betaa=(lemda*D)/d
+printf("Fringe width is %.2f cm",betaa)
diff --git a/3537/CH1/EX1.39/Ex1_39.txt b/3537/CH1/EX1.39/Ex1_39.txt
new file mode 100644
index 000000000..8aa2299b6
--- /dev/null
+++ b/3537/CH1/EX1.39/Ex1_39.txt
@@ -0,0 +1 @@
+Fringe width is 0.05 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.4/Ex1_4.sce b/3537/CH1/EX1.4/Ex1_4.sce
new file mode 100644
index 000000000..6513d9c76
--- /dev/null
+++ b/3537/CH1/EX1.4/Ex1_4.sce
@@ -0,0 +1,10 @@
+//Example 1_4
+clc;
+clear;
+//To find the ratio of maximum intensity to minimum intensity
+I1=10 //units in watts per square mts
+I2=25 //units in watts per square mts
+I1_I2=I1/I2
+a1_a2=sqrt(I1_I2)
+Imax_Imin=(a1_a2+1)^2/(a1_a2-1)^2
+printf("The ratio of maximum intensity to minimum intensity is %f",Imax_Imin) \ No newline at end of file
diff --git a/3537/CH1/EX1.4/Ex1_4.txt b/3537/CH1/EX1.4/Ex1_4.txt
new file mode 100644
index 000000000..fc21ec0f7
--- /dev/null
+++ b/3537/CH1/EX1.4/Ex1_4.txt
@@ -0,0 +1 @@
+ The ratio of maximum intensity to minimum intensity is 19.727086 \ No newline at end of file
diff --git a/3537/CH1/EX1.40/Ex1_40.sce b/3537/CH1/EX1.40/Ex1_40.sce
new file mode 100644
index 000000000..16aaa746b
--- /dev/null
+++ b/3537/CH1/EX1.40/Ex1_40.sce
@@ -0,0 +1,10 @@
+//Example 1_40
+clc();
+clear;
+//To calculate the wavelength of source of light
+betaa=0.30 //units in cm
+d=0.04 //units in cm
+D=180 //units in cm
+lemda=((betaa*d)/D)*10^8
+printf("The wavelength of source of light is %.0f angstroam",lemda)
+//In text book answer is printed wrong as 6700A But the correct answer is 6667 A
diff --git a/3537/CH1/EX1.40/Ex1_40.txt b/3537/CH1/EX1.40/Ex1_40.txt
new file mode 100644
index 000000000..0d1a1d6fb
--- /dev/null
+++ b/3537/CH1/EX1.40/Ex1_40.txt
@@ -0,0 +1 @@
+The wavelength of source of light is 6667 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.41/Ex1_41.sce b/3537/CH1/EX1.41/Ex1_41.sce
new file mode 100644
index 000000000..bc2dc59b6
--- /dev/null
+++ b/3537/CH1/EX1.41/Ex1_41.sce
@@ -0,0 +1,10 @@
+//Example 1_41
+clc();
+clear;
+//To calculate the wavelength of monochromatic light
+betaa=0.4 //units in mm
+betaa=0.4*10^-1 //units in cm
+d=0.1 //units in cm
+D=80 //units in cm
+lemda=(d*betaa)/D*10^8
+printf("The wavelength of monochromatic light is %.0f angstroam",lemda)
diff --git a/3537/CH1/EX1.41/Ex1_41.txt b/3537/CH1/EX1.41/Ex1_41.txt
new file mode 100644
index 000000000..51be7de17
--- /dev/null
+++ b/3537/CH1/EX1.41/Ex1_41.txt
@@ -0,0 +1 @@
+ The wavelength of monochromatic light is 5000 angstroam \ No newline at end of file
diff --git a/3537/CH1/EX1.42/Ex1_42.sce b/3537/CH1/EX1.42/Ex1_42.sce
new file mode 100644
index 000000000..14b635fca
--- /dev/null
+++ b/3537/CH1/EX1.42/Ex1_42.sce
@@ -0,0 +1,10 @@
+//Example 1_42
+clc();
+clear;
+//To find the fringe width
+lemda=5000 //units in angstroam
+lemda=5000*10^-8 //units in cm
+d=0.05 //units in cm
+D=50 //units in cm
+betaa=(lemda*D)/d
+printf("Fringe width is %.2f cm",betaa)
diff --git a/3537/CH1/EX1.42/Ex1_42.txt b/3537/CH1/EX1.42/Ex1_42.txt
new file mode 100644
index 000000000..8aa2299b6
--- /dev/null
+++ b/3537/CH1/EX1.42/Ex1_42.txt
@@ -0,0 +1 @@
+Fringe width is 0.05 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.43/Ex1_43.sce b/3537/CH1/EX1.43/Ex1_43.sce
new file mode 100644
index 000000000..f0d94720a
--- /dev/null
+++ b/3537/CH1/EX1.43/Ex1_43.sce
@@ -0,0 +1,10 @@
+//Example 1_43
+clc();
+clear;
+//To find the thickness of the soap film
+lemda=7000 //units in angstroam
+lemda=7000*10^-8 //units in cm
+u=1.33
+n=2
+t=(((2*n)+1)*(lemda/2))/(2*u)
+printf("Thickness of the soap film is %.8f cm",t)
diff --git a/3537/CH1/EX1.43/Ex1_43.txt b/3537/CH1/EX1.43/Ex1_43.txt
new file mode 100644
index 000000000..46cd8c771
--- /dev/null
+++ b/3537/CH1/EX1.43/Ex1_43.txt
@@ -0,0 +1 @@
+Thickness of the soap film is 0.00006579 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.44/Ex1_44.sce b/3537/CH1/EX1.44/Ex1_44.sce
new file mode 100644
index 000000000..67ae0ffdb
--- /dev/null
+++ b/3537/CH1/EX1.44/Ex1_44.sce
@@ -0,0 +1,9 @@
+//Example 1_44
+clc();
+clear;
+//To find the refractive index of the transparent sheet
+lemda=5460*10^-8 //units in cm
+t=6.3*10^-4 //units in cm
+n=6
+u=(n*lemda)/t+1
+printf("The refractive index of the transparent sheet is %.2f",u)
diff --git a/3537/CH1/EX1.44/Ex1_44.txt b/3537/CH1/EX1.44/Ex1_44.txt
new file mode 100644
index 000000000..1be512090
--- /dev/null
+++ b/3537/CH1/EX1.44/Ex1_44.txt
@@ -0,0 +1 @@
+The refractive index of the transparent sheet is 1.52 \ No newline at end of file
diff --git a/3537/CH1/EX1.45/Ex1_45.sce b/3537/CH1/EX1.45/Ex1_45.sce
new file mode 100644
index 000000000..4f7e1a1c7
--- /dev/null
+++ b/3537/CH1/EX1.45/Ex1_45.sce
@@ -0,0 +1,10 @@
+//Example 1_45
+clc();
+clear;
+//To calculate the thickness of the glass plate
+lemda=5000 //units in angstroam
+lemda=5000*10^-8 //units in cm
+u=1.56
+n=16
+t=(n*lemda)/(u-1)
+printf("Thickness of the glass plate is %.6f cm",t)
diff --git a/3537/CH1/EX1.45/Ex1_45.txt b/3537/CH1/EX1.45/Ex1_45.txt
new file mode 100644
index 000000000..5549185cd
--- /dev/null
+++ b/3537/CH1/EX1.45/Ex1_45.txt
@@ -0,0 +1 @@
+ Thickness of the glass plate is 0.001429 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.46/Ex1_46.sce b/3537/CH1/EX1.46/Ex1_46.sce
new file mode 100644
index 000000000..340e1c019
--- /dev/null
+++ b/3537/CH1/EX1.46/Ex1_46.sce
@@ -0,0 +1,11 @@
+//Example 1_46
+clc();
+clear;
+//To find the least thickness of the glass plate
+lemda=6000 //units in angstroam
+lemda=6000*10^-8 //units in cm
+u=1.5
+r=50 //units in degree
+n=1 //n=1 for least thickness
+t=(n*lemda)/(2*u*cos(r*%pi/180))
+printf("Least Thickness of the glass plate is %.7f cm",t)
diff --git a/3537/CH1/EX1.46/Ex1_46.txt b/3537/CH1/EX1.46/Ex1_46.txt
new file mode 100644
index 000000000..0c18e0152
--- /dev/null
+++ b/3537/CH1/EX1.46/Ex1_46.txt
@@ -0,0 +1 @@
+Least Thickness of the glass plate is 0.0000311 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.47/Ex1_47.sce b/3537/CH1/EX1.47/Ex1_47.sce
new file mode 100644
index 000000000..7df46b66b
--- /dev/null
+++ b/3537/CH1/EX1.47/Ex1_47.sce
@@ -0,0 +1,10 @@
+//Example 1_47
+clc();
+clear;
+//To find the thickness of the glass plate
+lemda=5000 //units in angstroam
+lemda=5000*10^-8 //units in cm
+s_beta=6
+u=1.5
+t=((s_beta)*lemda)/(u-1)
+printf("The thickness of the glass plate is %.4f cm",t)
diff --git a/3537/CH1/EX1.47/Ex1_47.txt b/3537/CH1/EX1.47/Ex1_47.txt
new file mode 100644
index 000000000..5938c34af
--- /dev/null
+++ b/3537/CH1/EX1.47/Ex1_47.txt
@@ -0,0 +1 @@
+The thickness of the glass plate is 0.0006 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.48/Ex1_48.sce b/3537/CH1/EX1.48/Ex1_48.sce
new file mode 100644
index 000000000..c4b842cb1
--- /dev/null
+++ b/3537/CH1/EX1.48/Ex1_48.sce
@@ -0,0 +1,8 @@
+//Example 1_48
+clc();
+clear;
+//To calculate the refractive index of the liquid
+D8=1.42 //units in cm
+d8=1.25 //units in cm
+u=(D8)^2/(d8)^2
+printf("The refractive index of the liquid is %.2f",u)
diff --git a/3537/CH1/EX1.48/Ex1_48.txt b/3537/CH1/EX1.48/Ex1_48.txt
new file mode 100644
index 000000000..c358d841d
--- /dev/null
+++ b/3537/CH1/EX1.48/Ex1_48.txt
@@ -0,0 +1 @@
+The refractive index of the liquid is 1.29 \ No newline at end of file
diff --git a/3537/CH1/EX1.49/Ex1_49.sce b/3537/CH1/EX1.49/Ex1_49.sce
new file mode 100644
index 000000000..a21a9f01e
--- /dev/null
+++ b/3537/CH1/EX1.49/Ex1_49.sce
@@ -0,0 +1,12 @@
+//Example 1_49
+clc();
+clear;
+//To find the thickness of the thinnest film
+u=1.33
+lemda=6000 //units in angstroam
+lemda=6000*10^-8 //units in cm
+i=0 //units in degrees
+r=0 //units in degrees
+n=1
+t=(n*lemda)/(2*u*cos(r))
+printf("Thickness of the thinnest film is %.7f cm",t)
diff --git a/3537/CH1/EX1.49/Ex1_49.txt b/3537/CH1/EX1.49/Ex1_49.txt
new file mode 100644
index 000000000..bb6ca3782
--- /dev/null
+++ b/3537/CH1/EX1.49/Ex1_49.txt
@@ -0,0 +1 @@
+Thickness of the thinnest film is 0.0000226 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.5/Ex1_5.sce b/3537/CH1/EX1.5/Ex1_5.sce
new file mode 100644
index 000000000..80c9118ae
--- /dev/null
+++ b/3537/CH1/EX1.5/Ex1_5.sce
@@ -0,0 +1,10 @@
+//Example 1_5
+clc;
+clear;
+//To Calculate the amplitude ratio of the sources
+Imax=9
+Imin=1
+Imax_Imin=Imax/Imin
+amax_amin=sqrt(Imax_Imin)
+ a1_a2=amax_amin-1
+ printf("the ratio of amplitudes %d/%d",a1_a2,1) \ No newline at end of file
diff --git a/3537/CH1/EX1.5/Ex1_5.txt b/3537/CH1/EX1.5/Ex1_5.txt
new file mode 100644
index 000000000..48c21d1fe
--- /dev/null
+++ b/3537/CH1/EX1.5/Ex1_5.txt
@@ -0,0 +1 @@
+the ratio of amplitudes 2/1 \ No newline at end of file
diff --git a/3537/CH1/EX1.50/Ex1_50.sce b/3537/CH1/EX1.50/Ex1_50.sce
new file mode 100644
index 000000000..219c81360
--- /dev/null
+++ b/3537/CH1/EX1.50/Ex1_50.sce
@@ -0,0 +1,12 @@
+//Example 1_50
+clc();
+clear;
+//To find the radius of curvature of the plano convex lens
+lamda=6000 //units in angstroam
+lamda=6000*10^-8 //units in cm
+m=18
+Dm=0.65 //units in cm
+n=8
+Dn=0.35 //units in cm
+R=(Dm^2-Dn^2)/(4*lamda*(m-n))
+printf("Radius of curvature of the plano convex lens is %.0f cm",R)
diff --git a/3537/CH1/EX1.50/Ex1_50.txt b/3537/CH1/EX1.50/Ex1_50.txt
new file mode 100644
index 000000000..d99cd5d9d
--- /dev/null
+++ b/3537/CH1/EX1.50/Ex1_50.txt
@@ -0,0 +1 @@
+Radius of curvature of the plano convex lens is 125 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.51/Ex1_51.sce b/3537/CH1/EX1.51/Ex1_51.sce
new file mode 100644
index 000000000..c38726f5e
--- /dev/null
+++ b/3537/CH1/EX1.51/Ex1_51.sce
@@ -0,0 +1,8 @@
+//Example 1_51
+clc();
+clear;
+//To find the refraactive index of the liquid
+D12air=1.45 //units in cm
+D12liq=1.25 //units in cm
+u=(D12air)^2/(D12liq)^2
+printf("Refractive index of the liquid is %.4f",u)
diff --git a/3537/CH1/EX1.51/Ex1_51.txt b/3537/CH1/EX1.51/Ex1_51.txt
new file mode 100644
index 000000000..e5d293554
--- /dev/null
+++ b/3537/CH1/EX1.51/Ex1_51.txt
@@ -0,0 +1 @@
+Refractive index of the liquid is 1.3456 \ No newline at end of file
diff --git a/3537/CH1/EX1.52/Ex1_52.sce b/3537/CH1/EX1.52/Ex1_52.sce
new file mode 100644
index 000000000..d1f0e9e7d
--- /dev/null
+++ b/3537/CH1/EX1.52/Ex1_52.sce
@@ -0,0 +1,9 @@
+//Example 1_52
+clc();
+clear;
+//To find diameter of 25th ring
+dm=0.62 //units in cm
+ds=0.3 //units in cm
+d25=2*(dm^2-ds^2)+ds^2 //units in cm^2
+d25=sqrt(d25) //units in cm
+printf("Diameter of 25th ring is %.3f cm",d25)
diff --git a/3537/CH1/EX1.52/Ex1_52.txt b/3537/CH1/EX1.52/Ex1_52.txt
new file mode 100644
index 000000000..a2f3ffe3e
--- /dev/null
+++ b/3537/CH1/EX1.52/Ex1_52.txt
@@ -0,0 +1 @@
+Diameter of 25th ring is 0.824 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.53/Ex1_53.sce b/3537/CH1/EX1.53/Ex1_53.sce
new file mode 100644
index 000000000..1ab67a385
--- /dev/null
+++ b/3537/CH1/EX1.53/Ex1_53.sce
@@ -0,0 +1,14 @@
+//Example 1_53
+clc();
+clear;
+//To find the radius of the curvature
+lamda=5890 //units in angstroam
+lamda=5890*10^-8 //units in cm
+//diameter of the 15th ring
+m=15
+Dm=0.590 //units in cm
+//diameter of the 5th ring
+n=5
+Dn=0.336 //units in cm
+R=(Dm-Dn)/(4*lamda*(m-n))
+printf("the radius of the curvature of the convex lens is %.2f cm",R)
diff --git a/3537/CH1/EX1.53/Ex1_53.txt b/3537/CH1/EX1.53/Ex1_53.txt
new file mode 100644
index 000000000..da5d7ad4c
--- /dev/null
+++ b/3537/CH1/EX1.53/Ex1_53.txt
@@ -0,0 +1 @@
+the radius of the curvature of the convex lens is 107.81 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.54/Ex1_54.sce b/3537/CH1/EX1.54/Ex1_54.sce
new file mode 100644
index 000000000..ad0c5a94e
--- /dev/null
+++ b/3537/CH1/EX1.54/Ex1_54.sce
@@ -0,0 +1,10 @@
+//Example 1_54
+clc();
+clear;
+//To find the wavelength of the light
+R=70 //units in cm
+//Diameter of the 10th dark ring
+D=0.433 //units in cm
+n=10
+lamda=D^2/(4*R*n) //units in cm
+printf("The wavelength of the light is %f cm",lamda)
diff --git a/3537/CH1/EX1.54/Ex1_54.txt b/3537/CH1/EX1.54/Ex1_54.txt
new file mode 100644
index 000000000..8bc595b8b
--- /dev/null
+++ b/3537/CH1/EX1.54/Ex1_54.txt
@@ -0,0 +1 @@
+The wavelength of the light is 0.000067 cm \ No newline at end of file
diff --git a/3537/CH1/EX1.6/Ex1_6.sce b/3537/CH1/EX1.6/Ex1_6.sce
new file mode 100644
index 000000000..17d483ddb
--- /dev/null
+++ b/3537/CH1/EX1.6/Ex1_6.sce
@@ -0,0 +1,15 @@
+//Example 1_6
+clc;
+clear;
+//find the distance between the slits
+lamda=500 //units in nm
+lamda=500*10^-9
+D=2 //units in mts
+f=100
+d1=5 //units in cm
+d1=5*10^-2 //units in mts
+betaa=d1/f //unitd in mts
+//the distance between the slits
+d=(lamda*D)/betaa //units in mts
+d=d*10^3 //units in mm
+printf("distance between slits is %dmm",d) \ No newline at end of file
diff --git a/3537/CH1/EX1.6/Ex1_6.txt b/3537/CH1/EX1.6/Ex1_6.txt
new file mode 100644
index 000000000..a18c3fa27
--- /dev/null
+++ b/3537/CH1/EX1.6/Ex1_6.txt
@@ -0,0 +1 @@
+distance between slits is 2 \ No newline at end of file
diff --git a/3537/CH1/EX1.7/Ex1_7.sce b/3537/CH1/EX1.7/Ex1_7.sce
new file mode 100644
index 000000000..4099e2e52
--- /dev/null
+++ b/3537/CH1/EX1.7/Ex1_7.sce
@@ -0,0 +1,12 @@
+//Example 1_7
+clc;
+clear;
+//Calculate the fringe width
+d=0.2 //units in mm
+d=0.2*10^-3 //units in mts
+lamda=550 //units in nm
+lamda=550*10^-9 //units in mts
+D=1 //units in mts
+betaa=(lamda*D)/d //units in mts
+betaa=betaa*10^3 //units in mm
+printf("Fringe width on a screen at a distance of 1m from the slits is %.2fmm",betaa) \ No newline at end of file
diff --git a/3537/CH1/EX1.7/Ex1_7.txt b/3537/CH1/EX1.7/Ex1_7.txt
new file mode 100644
index 000000000..fc5fcafc4
--- /dev/null
+++ b/3537/CH1/EX1.7/Ex1_7.txt
@@ -0,0 +1 @@
+Fringe width on a screen at a distance of 1m from the slits is 2.750000 \ No newline at end of file
diff --git a/3537/CH1/EX1.8/Ex1_8.sce b/3537/CH1/EX1.8/Ex1_8.sce
new file mode 100644
index 000000000..d5192c4a4
--- /dev/null
+++ b/3537/CH1/EX1.8/Ex1_8.sce
@@ -0,0 +1,21 @@
+//Example 1_8
+clc;
+clear;
+//To Calculate the Angular position of the 10th maximum and first minimum
+//The distance from centre where 10th maximum is obtained by
+lamda=5460 //units in angstrom
+lamda=5460*10^-10 //units in mts
+n=10
+d=0.1 //units in mm
+d=0.1*10^-3 //units in mts
+D=2 //units in mts
+x10=(n*lamda*D)/d //units in mts
+//angular position with respect to center is
+tantheta=(x10/D) //units in radians
+z=atan(tantheta)*(180/%pi) //units in degrees
+printf("Angular position of 10th maximum is theta=%.3f degrees",z)
+x1=(lamda*D)/(2*d) //units n mts
+printf("\n The distance from centre where 1st minimum is obtained is %f metres",x1)
+tantheta1=(x1/D) //units in radians
+z1=atan(tantheta1)*(180/%pi) //units in degrees
+printf("\n Angular position with respect to center is theta=%.3f degrees",z1) \ No newline at end of file
diff --git a/3537/CH1/EX1.8/Ex1_8.txt b/3537/CH1/EX1.8/Ex1_8.txt
new file mode 100644
index 000000000..a8986f514
--- /dev/null
+++ b/3537/CH1/EX1.8/Ex1_8.txt
@@ -0,0 +1,3 @@
+Angular position of 10th maximum is theta=3.125 degrees
+ The distance from centre where 1st minimum is obtained is 0.005460 metres
+ Angular position with respect to center is theta=0.156 degrees \ No newline at end of file
diff --git a/3537/CH1/EX1.9/Ex1_9.sce b/3537/CH1/EX1.9/Ex1_9.sce
new file mode 100644
index 000000000..cf8d0eba2
--- /dev/null
+++ b/3537/CH1/EX1.9/Ex1_9.sce
@@ -0,0 +1,16 @@
+//Example 1_9
+clc();
+clear;
+//To Find the least distance of that point from central maximum
+lamda1=650 //units in nm
+lamda1=650*10^-9 //units in mts
+lamda2=500 //units in nm
+lamda2=500*10^-9 //units in mts
+D=1 //units in mts
+d=0.5 //units in mm
+d=0.5*10^-3 //units in mts
+n_m=lamda2/lamda1
+printf("This means that 10th bright fringe of 650 nm coincides with 13th fringe of wavelength 500 nm")
+n=10 //least distance of that point from central maximum
+x=((n*lamda1*D)*10^3)/d
+printf("\n least distance of that point from central maximum is %d mm",x)
diff --git a/3537/CH1/EX1.9/Ex1_9.txt b/3537/CH1/EX1.9/Ex1_9.txt
new file mode 100644
index 000000000..84a69538e
--- /dev/null
+++ b/3537/CH1/EX1.9/Ex1_9.txt
@@ -0,0 +1,2 @@
+This means that 10th bright fringe of 650 nm coincides with 13th fringe of wavelength 500 nm
+ least distance of that point from central maximum is 13 mm \ No newline at end of file