initial commit / add all books

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diff --git a/1664/CH4/EX4.1/Ex4_1.sce b/1664/CH4/EX4.1/Ex4_1.sce
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index 000000000..53e6e9aae
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+++ b/1664/CH4/EX4.1/Ex4_1.sce
@@ -0,0 +1,12 @@
+

+

+//Example No 133.

+//Page No 4.1.

+//To find change in wavelength.

+clc;clear;

+h = 6.63*10^(-34);//Planck's constant -[J-s].

+m0 = 9.1*10^(-31);//mass of electron -[kg].

+c = 3*10^(8);//Velocity of ligth -[m/s].

+cosq = cosd(135);//Angle of scattering -[degree].

+delW = (h/(m0*c))*(1-cosq);//change in wavelength.

+printf("\nThe change in wavelength is %3.3e m",delW);

diff --git a/1664/CH4/EX4.10/Ex4_10.sce b/1664/CH4/EX4.10/Ex4_10.sce
new file mode 100755
index 000000000..998440c83
--- /dev/null
+++ b/1664/CH4/EX4.10/Ex4_10.sce
@@ -0,0 +1,11 @@
+

+

+//Example No.4.10

+// Page No.138.

+//To find the probability.

+clc;clear;

+L = 25*10^(-10);//Width of the potential well -[m].

+delx = 0.05*10^(-10);//Interval -[m].

+x = int(1);

+P = (((2*delx)/L)*x);//'P' is the probability of finding the practicle at an interval of 0.05 .

+printf("\nThe probability of finding the particle is %.3f",P);

diff --git a/1664/CH4/EX4.11/Ex4_11.sce b/1664/CH4/EX4.11/Ex4_11.sce
new file mode 100755
index 000000000..14ac4071b
--- /dev/null
+++ b/1664/CH4/EX4.11/Ex4_11.sce
@@ -0,0 +1,14 @@
+

+//Example No.4.11.

+//Page No.138.

+clc;clear;

+n = 1;//For the lowest energy value n=1.

+h = 6.626*10^(-34);//Planck's constant.

+L = 1*10^(-10);//Width of the potential well -[m].

+m = 9.1*10^(-31);//Mass of the electron.

+E = ((n^(2)*h^(2))/(8*m*L^(2)));

+E = ((h^(2))/(8*m*L^(2)));// For the lowest energy value n=1.

+printf("\nThe lowest energy of the electron in joules is %3.3e J",E);;// Lowest energy of the electron in joules.

+E = (E/(1.6*10^(-19)));

+printf("\nThe lowest energy of the electron in eV is %.2f eV",E);// Lowest energy of the electron in eV.

+

diff --git a/1664/CH4/EX4.12/Ex4_12.sce b/1664/CH4/EX4.12/Ex4_12.sce
new file mode 100755
index 000000000..85253ac74
--- /dev/null
+++ b/1664/CH4/EX4.12/Ex4_12.sce
@@ -0,0 +1,15 @@
+

+

+//Example No.4.12.

+//Page No.139.

+//To find lowest energy of the electron.

+clc;clear;

+n = 1;//For the lowest energy value n=1.

+h = 6.626*10^(-34);//Planck's constant.

+L = 1*10^(-10);//Width of the potential well -[m].

+m = 9.1*10^(-31);//Mass of the electron.

+E = (2*(n^(2)*h^(2))/(8*m*L^(2)));

+//'E' is the Lowest energy of the system.

+printf("\nThe lowest energy of the system in joules is %3.3e J",E);

+E = (E/(1.6*10^(-19)));

+printf("\nThe lowest energy of the system in eV is %.2f eV",E);// Lowest energy of the electron in eV.

diff --git a/1664/CH4/EX4.13/Ex4_13.sce b/1664/CH4/EX4.13/Ex4_13.sce
new file mode 100755
index 000000000..2d4f1c624
--- /dev/null
+++ b/1664/CH4/EX4.13/Ex4_13.sce
@@ -0,0 +1,31 @@
+

+

+//Example No.4.13.

+//Page No.139.

+clc;clear;

+h = 6.626*10^(-34);//Planck's constant.

+L = 1*10^(-10);//Width of the potential well -[m].

+m = 9.1*10^(-31);//Mass of the electron.

+E = ((6*h^(2))/(8*m*L^(2)));

+printf("\n 1) The lowest energy of the system in joules is %3.3e eV",E);

+E = (E/(1.6*10^(-19)));

+printf("\n 2) The lowest energy of the system is  %.2f eV",E);

+disp('3) Quantum numbers are,');

+n = 1;

+l = 0;

+ml = 0;

+ms = 0.5;

+ms1 = -0.5;

+printf("\ni)n = %.0f",n);

+printf(" , l = %.0f",l);

+printf(" , ml = %.0f",ml);

+printf(" , ms = %.1f",ms);

+printf("\nii)n = %.0f",n);

+printf(" , l = %.0f",l);

+printf(" , ml = %.0f",ml);

+printf(" , ms1 = %.1f",ms1);

+n=2;

+printf("\niii)n = %.0f",n);

+printf(" , l = %.0f",l);

+printf(" , ml = %.0f",ml);

+printf(" , ms = %.1f",ms);

diff --git a/1664/CH4/EX4.14/Ex4_14.sce b/1664/CH4/EX4.14/Ex4_14.sce
new file mode 100755
index 000000000..9c76d97e8
--- /dev/null
+++ b/1664/CH4/EX4.14/Ex4_14.sce
@@ -0,0 +1,11 @@
+

+

+//Example No.4.14.

+//Page No.140.

+//The mass of the particle.

+clc;clear;

+E = 0.025*1.6*10^(-19);//Lowest energy.

+h = 6.626*10^(-34);//Planck's constant.

+L = 100*10^(-10);//Width of the well -[m].

+m = ((h^(2))/(8*E*L^(2)));

+printf("\nThe mass of the particle is %3.3e kg",m);

diff --git a/1664/CH4/EX4.15/Ex4_15.sce b/1664/CH4/EX4.15/Ex4_15.sce
new file mode 100755
index 000000000..ca6a0230c
--- /dev/null
+++ b/1664/CH4/EX4.15/Ex4_15.sce
@@ -0,0 +1,21 @@
+

+

+//Example No.4.15.

+//Page No.141.

+//To find energy density.

+clc;clear;

+T = 6000;//Temperature -[K].

+k = 1.38*10^(-23);//Boltzman's constant.

+w1 = 450*10^(-9);//wavelength -[m].

+w2 = 460*10^(-9);//wavelength -[m].

+c = 3*10^(8);//Velcity of light.

+v1=(c/w1);

+printf("\nThe velocity for wavelength 450 nm is %3.3e Hz",v1);

+v2 = (c/w2);

+printf("\nThe velocity for wavelength 460 nm is %3.3e Hz",v2);

+v = ((v1+v2)/2);

+printf("\nThe average value of v is %3.3e Hz",v);

+h = 6.626*10^(-34);//Planck's constant.

+d = (8*%pi*h*v^(3))/(c^(3));

+dv = d*(1/(exp((h*v)/(k*T))-1));//Energy density.

+printf("\nThe energy density of the black body is %3.3e J/m^3",dv);

diff --git a/1664/CH4/EX4.2/Ex4_2.sce b/1664/CH4/EX4.2/Ex4_2.sce
new file mode 100755
index 000000000..ea3fb6c91
--- /dev/null
+++ b/1664/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,23 @@
+

+

+//Example No.4.2.

+//Page No.134.

+clc;clear;

+h = 6.626*10^(-34);//Planck's constant.

+m0 = 9.1*10^(-31);//mass of electron.

+c = 3*10^(8);//Velocity of ligth.

+cosq = cosd(90);//Scattering angle -[degree].

+delW = (h/(m0*c))*(1-cosq);//Compton's shift

+delW = delW*10^(10);

+printf("\na)The Comptons  shift is  %.5f A",delW);

+w = 2;//Wavelength -[A]

+W = (delW+w);// Wavelength of the scattered photon.

+printf("\nb)The wavelength of the scattered photon is % 5f A",W);

+E = (h*c)*((1/(w*10^(-10)))-(1/(W*10^(-10))));//Energy of the recoiling electron in joules.

+printf("\nc)The energy of the recoiling electron in joules is %3.3e J",E);

+E = (E/(1.6*10^(-19)));//Energy of the recoiling electron in eV.

+printf("\nc)The energy of the recoiling electron in eV is %3.3e eV",E);

+sinq = sind(90);

+Q = (((h*c)/w)*sinq)/(((h*c)/w)-((h*c)/W)*cosq);

+theta = atand(Q);

+printf("\ne)The angle at which the recoiling electron appears is %.0f degree",theta); 

diff --git a/1664/CH4/EX4.3/Ex4_3.sce b/1664/CH4/EX4.3/Ex4_3.sce
new file mode 100755
index 000000000..0b6e998d4
--- /dev/null
+++ b/1664/CH4/EX4.3/Ex4_3.sce
@@ -0,0 +1,17 @@
+

+

+//Example No.4.3.

+//Page NO.135.

+clc;clear;

+h = 6.626*10^(-34);//Planck's constant.

+mo = 9.1*10^(-31);//mass of electron.

+c = 3*10^(8);//Velocity of ligth.

+w = (1*1.6*10^(-19)*10^(6));//wavelength.

+cosq = cosd(60);

+delw = ((h/(mo*c))*(1-cosq));//Compton shift

+delw = delw*10^(10);

+printf("\n1)The Comptons shift = %.3f A",delw);

+E = ((h*c)/w);//energy of the incident photon.

+W = (delw+E);//Wavelength of the scattered photon.

+W = (0.012)+(1.242);

+printf("\n3)The wavelength of the scattered photon = %.3f A",W);

diff --git a/1664/CH4/EX4.4/Ex4_4.sce b/1664/CH4/EX4.4/Ex4_4.sce
new file mode 100755
index 000000000..fa1b6cc19
--- /dev/null
+++ b/1664/CH4/EX4.4/Ex4_4.sce
@@ -0,0 +1,17 @@
+

+

+//Example No 135.

+//Page No 4.4.

+//To find number of photons.

+clc;clear;

+h = 6.63*10^(-34);//Planck's constant.

+c = 3*10^(8);//Velocity of ligth.

+w = 5893*10^(-10);//wavelength.

+Op = 60;//output power -[W].

+E  =((h*c)/w);

+printf("\nEnergy of photon in joules is %3.3e J",E);//Energy of photon in joules.

+hv = (E/(1.6*10^(-19)));//Energy of photon in eV.

+printf("\nEnergy of photon in eV is %.3f eV",hv);

+Ps = ((Op)/(E));

+Ps = ((60)/(E));// Number of photons emitted per second.

+printf("\nThe number of photons emitted per second is %3.3e photons per second",Ps);

diff --git a/1664/CH4/EX4.5/Ex4_5.sce b/1664/CH4/EX4.5/Ex4_5.sce
new file mode 100755
index 000000000..95aa1823a
--- /dev/null
+++ b/1664/CH4/EX4.5/Ex4_5.sce
@@ -0,0 +1,18 @@
+

+

+//Example No 136.

+//Page No 4.5.

+//To find mass,momentum & energy of photon.

+clc;clear;

+h = 6.63*10^(-34);//Planck's constant.

+c = 3*10^(8);//Velocity of ligth.

+w = 10*10^(-10);//wavelength.

+E = ((h*c)/w);//Energy.

+printf("\n1)The energy of photon in joules is %3.3e J",E);

+E = E/(1.6*10^(-19)*10^(3));

+printf("\n2)The energy of photon in eV is %.3f Kev",E);

+p = (h/w);//Momentum.

+p = ((6.63*10^(-34))/(10*10^(-10)));

+printf("\n3)The momentum of the photon is %3.3e kg.m/s",p)

+m = (h/(w*c));

+printf("\n4)The mass of the photon is %3.3e kg",m);

diff --git a/1664/CH4/EX4.6/Ex4_6.sce b/1664/CH4/EX4.6/Ex4_6.sce
new file mode 100755
index 000000000..d95eb9e20
--- /dev/null
+++ b/1664/CH4/EX4.6/Ex4_6.sce
@@ -0,0 +1,9 @@
+

+

+//Example No 136.

+//Page No 4.6.

+//To find de-Broglie wavelength.

+clc;clear;

+V=1.25*10^(3);//Potential difference applied -[V].

+w=((12.27)/sqroot(V));//de-Broglie wavelength of electron.

+printf("\nThe de-Broglie wavelength of electron is %.3f A",w);

diff --git a/1664/CH4/EX4.7/Ex4_7.sce b/1664/CH4/EX4.7/Ex4_7.sce
new file mode 100755
index 000000000..5fb97bd66
--- /dev/null
+++ b/1664/CH4/EX4.7/Ex4_7.sce
@@ -0,0 +1,12 @@
+

+

+//Example No.136 .

+//Page No. 4.7.

+//To find de-Broglie wavelength.

+clc;clear;

+E = 45*1.6*10^(-19);//Energy of the electron.

+h = 6.63*10^(-34);//Planck's constant

+m = 9.1*10^(-31);//Mass of the electron.

+w = h/(sqrt(2*m*E));//de-Broglie wavelength.

+printf("\nThe de-Broglie wavelength of the photon is %3.3e m",w);

+

diff --git a/1664/CH4/EX4.8/Ex4_8.sce b/1664/CH4/EX4.8/Ex4_8.sce
new file mode 100755
index 000000000..4c392fe6e
--- /dev/null
+++ b/1664/CH4/EX4.8/Ex4_8.sce
@@ -0,0 +1,11 @@
+

+

+//Example No.4.8.

+//Page No.137.

+//To find de-Broglie wavelength.

+clc;clear;

+h=6.626*10^(-34);//Planck's constant.

+v=10^(7);//Velocity of the electron -[m/s].

+m=9.1*10^(-31);//Mass of the electron.

+w=(h/(m*v));//de-Broglie wavelength

+printf("\nThe de-Broglie wavelength is %3.3e m",w);

diff --git a/1664/CH4/EX4.9/Ex4_9.sce b/1664/CH4/EX4.9/Ex4_9.sce
new file mode 100755
index 000000000..31e1a9573
--- /dev/null
+++ b/1664/CH4/EX4.9/Ex4_9.sce
@@ -0,0 +1,12 @@
+

+

+//Example No 137.

+//Page No 4.9.

+//The de-Broglie wavelength of alpha particle.

+clc;clear;

+V = 1000;//Potential difference applied -[V].

+h = (6.626*10^(-34));//Planck's constant -[J-s].

+m = (1.67*10^(-27));//Mass of a proton -[kg].

+e = (1.6*10^(-19));//charge of electron -[J].

+w = h/sqrt(2*m*e*V);//de-Broglie wavelength

+printf("\nThe de-Broglie wavelength of alpha particle = %3.3e m",w);