initial commit / add all books

5 files changed, 77 insertions, 0 deletions

diff --git a/3768/CH11/EX11.1/Ex11_1.sce b/3768/CH11/EX11.1/Ex11_1.sce
new file mode 100644
index 000000000..a4b76db19
--- /dev/null
+++ b/3768/CH11/EX11.1/Ex11_1.sce
@@ -0,0 +1,16 @@
+//Example number 11.1, Page number 246
+
+clc;clear;
+close;
+
+//Variable declaration
+e=1.6*10**-19;     //charge(coulomb)
+v=3*10**3;   //velocity of matter wave(m/s)
+h=6.6*10**-34;    //plank's constant(Js)
+lamda=600*10**-9;    //wavelength(m)
+//Calculation
+Ej=h*v/lamda;    //matter wave energy(J)
+E=Ej/e;      //matter wave energy(eV)
+//Result
+printf("matter wave energy is %.2e eV",E)
+//answer given in the book is wrong
diff --git a/3768/CH11/EX11.2/Ex11_2.sce b/3768/CH11/EX11.2/Ex11_2.sce
new file mode 100644
index 000000000..59b0ace9c
--- /dev/null
+++ b/3768/CH11/EX11.2/Ex11_2.sce
@@ -0,0 +1,15 @@
+//Example number 11.2, Page number 246
+
+clc;clear;
+close;
+
+//Variable declaration
+e=1.6*10**-19;     //charge(coulomb)
+c=3*10**10;   //velocity of light(m/s)
+h=6.6*10**-34;    //plank's constant(Js)
+Eg=3;    //energy gap(eV)
+//Calculation
+lamda=h*c*10**9/(Eg*e);     //wavelength of photon(nm)
+//Result
+printf("wavelength of photon is %.f nm",lamda)
+//answer given in the book is wrong
diff --git a/3768/CH11/EX11.3/Ex11_3.sce b/3768/CH11/EX11.3/Ex11_3.sce
new file mode 100644
index 000000000..7db52ccb9
--- /dev/null
+++ b/3768/CH11/EX11.3/Ex11_3.sce
@@ -0,0 +1,15 @@
+//Example number 11.3, Page number 246
+
+clc;clear;
+close;
+
+//Variable declaration
+e=1.6*10**-19;     //charge(coulomb)
+E2_E1=3*e;    //energy gap(J)
+Kb=1.38*10**-23;    //boltzmann constant(J/K)
+T=323;    //temperature(K)
+//Calculation
+n=exp(-E2_E1/(Kb*T));    //ratio in higher and lower energy
+//Result
+printf("ratio in higher and lower energy is %.4e",n)
+//answer given in the book is wrong
diff --git a/3768/CH11/EX11.4/Ex11_4.sce b/3768/CH11/EX11.4/Ex11_4.sce
new file mode 100644
index 000000000..5879f214c
--- /dev/null
+++ b/3768/CH11/EX11.4/Ex11_4.sce
@@ -0,0 +1,17 @@
+//Example number 11.4, Page number 247
+
+clc;clear;
+close;
+
+//Variable declaration
+c=2.998*10**8;     //velocity of light(m/s)
+Kb=1.381*10**-23;    //boltzmann constant(J/K)
+T=1000;    //temperature(K)
+h=6.626*10**-34;    //plank's constant(Js)
+lamda=0.5*10**-6;   //wavelength(m)
+//Calculation
+v=c/lamda;    //frequency(Hz)
+BA=1/(exp(h*v/(Kb*T))-1);      //ratio of emission
+//Result
+printf("ratio of emission is %.1e",BA)
+//answer varies due to rounding off errors
diff --git a/3768/CH11/EX11.5/Ex11_5.sce b/3768/CH11/EX11.5/Ex11_5.sce
new file mode 100644
index 000000000..5d05afb52
--- /dev/null
+++ b/3768/CH11/EX11.5/Ex11_5.sce
@@ -0,0 +1,14 @@
+//Example number 11.5, Page number 247
+
+clc;clear;
+close;
+
+//Variable declaration
+c=2.998*10**8;     //velocity of light(m/s)
+h=6.626*10**-34;    //plank's constant(Js)
+e=1.602*10**-19;     //charge(coulomb)
+Eg=1.43;    //energy gap(eV)   
+//Calculation
+lamda=h*c*10**6/(Eg*e);        //wavelength(micro m)
+//Result
+printf("wavelength is %.2f micro-m",lamda)