initial commit / add all books

6 files changed, 72 insertions, 0 deletions

diff --git a/1991/CH3/EX3.1/1.sce b/1991/CH3/EX3.1/1.sce
new file mode 100755
index 000000000..049318ab1
--- /dev/null
+++ b/1991/CH3/EX3.1/1.sce
@@ -0,0 +1,13 @@
+clc

+clear

+//calculation of angle of refraction

+rj=(sind(6)/0.76)//from snells law

+x=asind(rj)

+printf("the refractive index of jelly is %3.3f deg",x)

+// calculating angle of incidence

+printf("\nsince angle of refraction and angle of incidence are alternate angles , angle of incidence is %3.3f deg",x)

+//calculating angle of refraction

+np=0.59/0.76 // according to relationship of media

+jnp=sind(7.9)/0.78

+rp=asind(jnp)

+printf("\nthe angle of refraction  is %3.3f deg",rp)

diff --git a/1991/CH3/EX3.2/2.sce b/1991/CH3/EX3.2/2.sce
new file mode 100755
index 000000000..2fda7980a
--- /dev/null
+++ b/1991/CH3/EX3.2/2.sce
@@ -0,0 +1,10 @@
+clc

+clear

+//input data

+a=1.28 //refractive index of X

+b=1.41 //refractive index of Y

+//calculation of condition for total internal reflection

+x=(a/b) 

+c=asind(x) // calculating critical angle

+//output

+printf("light incident with an angle greater than %3.3f degrees will be totally internally reflected",c)

diff --git a/1991/CH3/EX3.3/3.sce b/1991/CH3/EX3.3/3.sce
new file mode 100755
index 000000000..8c69441fc
--- /dev/null
+++ b/1991/CH3/EX3.3/3.sce
@@ -0,0 +1,9 @@
+clc

+clear

+//input data

+nb=0.67 //refractive index

+va=3.45*10^3

+//calculation

+vb=va/nb //snells law

+//output

+printf("the speed of the wave in medium b is %3.3f m/s",vb)

diff --git a/1991/CH3/EX3.4/4.sce b/1991/CH3/EX3.4/4.sce
new file mode 100755
index 000000000..a9443e485
--- /dev/null
+++ b/1991/CH3/EX3.4/4.sce
@@ -0,0 +1,8 @@
+clc

+clear

+//input data

+f=120 //lowest frequency 

+//calculation

+x=3*f // the next higher frequency is thrice the lowest frequency

+//output

+printf("the next higher frequency where the antinode is formed is at %3.3f Hz",x)

diff --git a/1991/CH3/EX3.5/5.sce b/1991/CH3/EX3.5/5.sce
new file mode 100755
index 000000000..03d668708
--- /dev/null
+++ b/1991/CH3/EX3.5/5.sce
@@ -0,0 +1,16 @@
+clc

+clear

+//input data

+amp=3.4*10^-5 //amplitude of the wave

+af=5.7*10^2 //angular frequency

+k=20 //wavenumber

+//calculation

+//wave frequency

+f=af/(2*%pi)

+l=(2*%pi)/k

+v=f*l

+printf("the wave frequency is %3.3f and the speed is %3.3f  m/s",f,v)

+//calculating greatest speed for the wave to pass through

+vmax=af*amp //greatest speed

+//output

+printf("\nthe greatest value of speed for the wave to pass through is %3.3f m/s",vmax)

diff --git a/1991/CH3/EX3.6/6.sce b/1991/CH3/EX3.6/6.sce
new file mode 100755
index 000000000..66ca751af
--- /dev/null
+++ b/1991/CH3/EX3.6/6.sce
@@ -0,0 +1,16 @@
+clc

+clear

+//input

+k=16

+w=23

+//calculation

+//1.wavelength

+l=2*%pi/k

+//output

+printf("the wavelength is %3.3f m",l)

+//2.wavespeed

+v=(l*w)/(2*%pi)

+printf("\nthe wavespeed is %3.3f m/s",v)

+//3.pase difference

+pha=(0.5*2*%pi)/0.39 // phase difference of molecules 0.5m apart 

+printf("\n the phase difference is %3.3f radians",pha)