19 files changed, 265 insertions, 0 deletions
diff --git a/3769/CH23/EX23.1/Ex23_1.sce b/3769/CH23/EX23.1/Ex23_1.sce
new file mode 100644
index 000000000..1752e48cd
--- /dev/null
+++ b/3769/CH23/EX23.1/Ex23_1.sce
@@ -0,0 +1,13 @@
+clear
+//Given
+h=6.62*10**-34                                     //J
+c=3*10**8                                           //m/s
+l=4.0*10**-7                                           //m
+
+//Calculation
+E=((h*c)/l)/1.6*10**-19
+p=h/l
+
+//Result
+printf("\n Value of energy is %0.1f  ev",E*10**38)
+printf("\n Momentum of photon is %0.3f  kg m/s",p)
diff --git a/3769/CH23/EX23.11/Ex23_11.sce b/3769/CH23/EX23.11/Ex23_11.sce
new file mode 100644
index 000000000..efa9111f9
--- /dev/null
+++ b/3769/CH23/EX23.11/Ex23_11.sce
@@ -0,0 +1,16 @@
+clear
+//Given
+h=6.6*10**-34
+c=3*10**8
+l=2000*10**-10
+w0=4.2*1.6*10**-19
+e=1.6*10**-19
+
+//Calculation
+K=((h*c)/l)-w0
+v0=K/e
+l1=(h*c)/w0
+
+//Result
+printf("\n (i) Potential difference is %0.3f  V", v0)
+printf("\n (ii) Wavelength of incident light is %0.0f  A",l1*10**10)
diff --git a/3769/CH23/EX23.12/Ex23_12.sce b/3769/CH23/EX23.12/Ex23_12.sce
new file mode 100644
index 000000000..ab2cbf628
--- /dev/null
+++ b/3769/CH23/EX23.12/Ex23_12.sce
@@ -0,0 +1,20 @@
+clear
+//Given
+h=6.6*10**-34
+c=3*10**8
+w0=2.39*1.6*10**-19
+f1=4000.0                      //A
+f2=6000                      //A
+m=9.1*10**-31
+e=1.9*10**-19
+d=0.1
+
+//Calculation
+//
+l=(h*c)/w0
+K=(12400/f1)-2.39
+vmax=sqrt((2*K*1.6*10**-19)/m)
+B=(m*vmax)/(e*d)
+
+//Result
+printf("\n Maximum value of B is %0.2f *10**-5 T",B*10**5)
diff --git a/3769/CH23/EX23.13/Ex23_13.sce b/3769/CH23/EX23.13/Ex23_13.sce
new file mode 100644
index 000000000..16dabba92
--- /dev/null
+++ b/3769/CH23/EX23.13/Ex23_13.sce
@@ -0,0 +1,9 @@
+clear
+//Given
+w0=4.4
+
+//Calculation
+l=12400/w0
+
+//Result
+printf("\n Wavelength of visible light is %0.0f  A",l)
diff --git a/3769/CH23/EX23.14/Ex23_14.sce b/3769/CH23/EX23.14/Ex23_14.sce
new file mode 100644
index 000000000..e2380bde5
--- /dev/null
+++ b/3769/CH23/EX23.14/Ex23_14.sce
@@ -0,0 +1,13 @@
+clear
+//Given
+h=6.625*10**-34
+c=3*10**8
+l=5600*10**-10
+a=5
+
+//Calculation
+E=(h*c)/l
+n=a/E
+
+//Result
+printf("\n Number of visible photons emitted per second is %0.2f *10**19 ",n*10**-19)
diff --git a/3769/CH23/EX23.15/Ex23_15.sce b/3769/CH23/EX23.15/Ex23_15.sce
new file mode 100644
index 000000000..b029d0ee4
--- /dev/null
+++ b/3769/CH23/EX23.15/Ex23_15.sce
@@ -0,0 +1,10 @@
+clear
+//Given
+v=100
+
+//Calculation
+//
+l=12.27/sqrt(v)
+
+//Result
+printf("\n Wavelength of an electron is %0.3f  A", l)
diff --git a/3769/CH23/EX23.16/Ex23_16.sce b/3769/CH23/EX23.16/Ex23_16.sce
new file mode 100644
index 000000000..bc2fbb2a6
--- /dev/null
+++ b/3769/CH23/EX23.16/Ex23_16.sce
@@ -0,0 +1,14 @@
+clear
+//Given
+h=6.62*10**-34
+m=9*10**-31
+v=10**5
+mp=1.67*10**-27
+
+//Calculation
+l=h/(m*v)
+lp=h/(mp*v)
+
+//Result
+printf("\n De-Broglie wavelength of electrons is %0.1f *10**-10 m",l*10**10)
+printf("\n De-Broglie wavelength of protons is %0.4f *10**-10  m",lp*10**10)
diff --git a/3769/CH23/EX23.17/Ex23_17.sce b/3769/CH23/EX23.17/Ex23_17.sce
new file mode 100644
index 000000000..60c898995
--- /dev/null
+++ b/3769/CH23/EX23.17/Ex23_17.sce
@@ -0,0 +1,12 @@
+clear
+//Given
+E=500*1.6*10**-19
+mp=1.67*10**-27
+h=6.62*10**-34
+
+//Calculation
+//
+l=h/(sqrt(2*mp*E))
+
+//Result
+printf("\n De-Broglie wavelength is %0.2f *10**-12 m",l*10**12)
diff --git a/3769/CH23/EX23.18/Ex23_18.sce b/3769/CH23/EX23.18/Ex23_18.sce
new file mode 100644
index 000000000..dbfd636c9
--- /dev/null
+++ b/3769/CH23/EX23.18/Ex23_18.sce
@@ -0,0 +1,15 @@
+clear
+//Given
+v=150.0
+mn=1.675*10**-27                     //Kg
+En=150*1.6*10**-19
+h=6.62*10**-34
+
+//Calculation
+//
+le=12.27/sqrt(v)
+ln=h/sqrt(2*mn*En)
+
+//Result
+printf("\n (i) De-Broglie wavelength of electron is %0.0f  A",le)
+printf("\n (ii) De-Broglie wavelength of neutron is %0.4f  A",ln*10**10)
diff --git a/3769/CH23/EX23.19/Ex23_19.sce b/3769/CH23/EX23.19/Ex23_19.sce
new file mode 100644
index 000000000..bc9d053cc
--- /dev/null
+++ b/3769/CH23/EX23.19/Ex23_19.sce
@@ -0,0 +1,10 @@
+clear
+//Given
+l=2.0*10**-10                   //m
+h=6.62*10**-34
+
+//Calculation
+p=h/l
+
+//Result
+printf("\n Momentum of electrons is %0.3f  Kg m/s", p)
diff --git a/3769/CH23/EX23.2/Ex23_2.sce b/3769/CH23/EX23.2/Ex23_2.sce
new file mode 100644
index 000000000..3d1126ad6
--- /dev/null
+++ b/3769/CH23/EX23.2/Ex23_2.sce
@@ -0,0 +1,14 @@
+clear
+//Given
+E=75*1.6*10**-19                           //J
+h=6.62*10**-34                             //J s
+c=3*10**8                                           //m/s
+
+
+//Calculation
+f=E/h
+l=(12400/E)*1.6*10**-19
+f=c/(l*10**10)
+
+//Result
+printf("\n Frequency of the photon is %0.0f *10**15 Hz",f*10**5)
diff --git a/3769/CH23/EX23.20/Ex23_20.sce b/3769/CH23/EX23.20/Ex23_20.sce
new file mode 100644
index 000000000..198efd6e7
--- /dev/null
+++ b/3769/CH23/EX23.20/Ex23_20.sce
@@ -0,0 +1,12 @@
+clear
+//Given
+l=1.4*10**-10                //m
+h=6.63*10**-34
+l1=2.0*10**-10
+c=3*10**8                                           //m/s
+
+//Calculation
+E=h*c*(1/l-1/l1)
+
+//Result
+printf("\n Energy of the scattered electron is %0.2f *10**-16 J",E*10**16)
diff --git a/3769/CH23/EX23.22/Ex23_22.sce b/3769/CH23/EX23.22/Ex23_22.sce
new file mode 100644
index 000000000..12af3bf64
--- /dev/null
+++ b/3769/CH23/EX23.22/Ex23_22.sce
@@ -0,0 +1,11 @@
+clear
+//Given
+me=9.11*10**-31                     //Kg
+lp=1.813*10**-4
+vp=3
+
+//Calculation
+mp=me/(lp*vp)
+
+//Result
+printf("\n The particles mass is %0.3f *10**-27 Kg. The particle is proton",mp*10**27)
diff --git a/3769/CH23/EX23.23/Ex23_23.sce b/3769/CH23/EX23.23/Ex23_23.sce
new file mode 100644
index 000000000..8e2636de6
--- /dev/null
+++ b/3769/CH23/EX23.23/Ex23_23.sce
@@ -0,0 +1,13 @@
+clear
+//Given
+l=0.82*10**-10                    //m
+h=6.6*10**-34
+m=9.1*10**-31
+c=3*10**8                                           //m/s
+
+//Calculation
+//
+le=sqrt((h*l)/(2*c*m))
+
+//Result
+printf("\n Wavelength associated with the photoelectrons is %0.4f  A",le*10**10)
diff --git a/3769/CH23/EX23.3/Ex23_3.sce b/3769/CH23/EX23.3/Ex23_3.sce
new file mode 100644
index 000000000..8f5f6ff5b
--- /dev/null
+++ b/3769/CH23/EX23.3/Ex23_3.sce
@@ -0,0 +1,12 @@
+clear
+//Given
+h=6.62*10**-34                           //Js
+f=880*10**3                              //Hz
+E1=10*10**3
+
+//Calculation
+E=h*f
+n=E1/E
+
+//Result
+printf("\n Number of photons emitted per second is %0.3f *10**31 ",n*10**-31)
diff --git a/3769/CH23/EX23.5/Ex23_5.sce b/3769/CH23/EX23.5/Ex23_5.sce
new file mode 100644
index 000000000..c59e5d550
--- /dev/null
+++ b/3769/CH23/EX23.5/Ex23_5.sce
@@ -0,0 +1,12 @@
+clear
+//Given
+A=2*10**-4
+I=30*10**-2
+t=1
+E=6.62*10**-19
+
+//Calculation
+n=(I*A)/E
+
+//Result
+printf("\n Rate at which photons strike the surface is %0.2f *10**13 photons/s",n*10**-13)
diff --git a/3769/CH23/EX23.6/Ex23_6.sce b/3769/CH23/EX23.6/Ex23_6.sce
new file mode 100644
index 000000000..be64cee48
--- /dev/null
+++ b/3769/CH23/EX23.6/Ex23_6.sce
@@ -0,0 +1,19 @@
+clear
+//Given
+h=6.62*10**-34                    //Js
+c=3*10**8
+l=4500*10**-10                     //m
+w=2.3
+
+//Calculation
+E=(h*c)/l
+E1=(E/1.6*10**-19)*10**38
+K=E1-w
+f0=(w*1.6*10**-19)/h
+p=h/l
+
+//Result
+printf("\n (i) The energy of photon is %0.1f  ev",E1)
+printf("\n (ii) The maximum kinetic energy of emitted electrons is %0.1f  ev",K)
+printf("\n (iii) Threshold frequency for sodium is %0.1f *10**14 Hz",f0*10**-14)
+printf("\n (iv) Momentum of a photon is %0.1f *10**-27 Kg m/s",p*10**27)
diff --git a/3769/CH23/EX23.7/Ex23_7.sce b/3769/CH23/EX23.7/Ex23_7.sce
new file mode 100644
index 000000000..d031e16d0
--- /dev/null
+++ b/3769/CH23/EX23.7/Ex23_7.sce
@@ -0,0 +1,23 @@
+clear
+//Given
+l=36.0*10**-8              //m
+w0=2*1.6*10**-19             //J
+h=6.62*10**-34               //Js
+c=3*10**8
+e=1.6*10**-19
+m=9.0*10**-31
+
+//Calculation
+//
+l0=(h*c)/w0
+E=(h*c)/l
+E1=(E/1.6*10**-19)*10**38
+K=E1-2
+v0=K
+vmax=sqrt(e*v0*2/m)
+
+//Result
+printf("\n (i) Threshold wavelength is %0.0f  A",l0*10**10)
+printf("\n (ii) Maximum kinetic energy of emitted photoelectrons is %0.3f  ev",K)
+printf("\n (iii) Stopping potential is %0.3f  Volts",v0)
+printf("\n (iv) Velocity is  %0.2f  *10**5 m/s",vmax*10**-5)
diff --git a/3769/CH23/EX23.8/Ex23_8.sce b/3769/CH23/EX23.8/Ex23_8.sce
new file mode 100644
index 000000000..24406e1c4
--- /dev/null
+++ b/3769/CH23/EX23.8/Ex23_8.sce
@@ -0,0 +1,17 @@
+clear
+//Given
+h=6.62*10**-34
+c=3*10**8
+l0=24.8*10**-8
+a=1.2
+e=1.6*10**-19
+
+//Calculation
+w0=(h*c)/l0
+w01=(w0/1.6*10**-19)*10**38
+h1=w01+a
+C=h1*e
+l=(h*c)/C
+
+//Result
+printf("\n Wavelength of incident light is %0.0f  A",l*10**10)