initial commit / add all books

10 files changed, 87 insertions, 0 deletions

diff --git a/2243/CH14/EX14.2/Ex14_2.sce b/2243/CH14/EX14.2/Ex14_2.sce
new file mode 100755
index 000000000..99f5fe3e8
--- /dev/null
+++ b/2243/CH14/EX14.2/Ex14_2.sce
@@ -0,0 +1,15 @@
+clc();

+clear;

+//Given :

+lambda = 6000; //wavelength in A

+E2_E1 = 12422/lambda; // energy in eV

+k = 8.62*10^-5; // in eV/K

+T = 300; // Temperature in K

+//Equilibrium ratio = N2/N1 =  exp[-(E2-E1)/k*T]

+//(a)

+Ratio = exp(-E2_E1/(k*T));

+//(b)

+T1 = (E2_E1)/(k*log(2)); // Temperature in K

+printf("Ratio =  %.2f x 10^-35 \n",Ratio*10^35);

+printf("T = %d K",T1);

+//Resuts obtained differ from those in texbook, because approximate value of k*T was considered

diff --git a/2243/CH14/EX14.2/Res14_2.txt b/2243/CH14/EX14.2/Res14_2.txt
new file mode 100755
index 000000000..6241cef1b
--- /dev/null
+++ b/2243/CH14/EX14.2/Res14_2.txt
@@ -0,0 +1,2 @@
+Ratio =  1.70 x 10^-35 

+T = 34650 K 
\ No newline at end of file
diff --git a/2243/CH14/EX14.3/Ex14_3.sce b/2243/CH14/EX14.3/Ex14_3.sce
new file mode 100755
index 000000000..7651373bc
--- /dev/null
+++ b/2243/CH14/EX14.3/Ex14_3.sce
@@ -0,0 +1,14 @@
+clc();

+clear;

+//Given :

+L =8;// in cm

+lambda = 5330; //wavelength in A

+// lambda = 2*L/n

+// 1 A = 1.0*10^-8 cm

+n= (2*L)/(lambda*10^-8); // allowed modes

+//adjacent mode 

+n1 = round(n+1);

+// 1 cm = 1.0*10^8 A

+lambda1 = ((2*L)/n1)*10^8;// wavelength in A

+D = lambda-lambda1; // difference in wavelengths in A

+printf("Difference = %.3f A",D);

diff --git a/2243/CH14/EX14.3/Res14_3.txt b/2243/CH14/EX14.3/Res14_3.txt
new file mode 100755
index 000000000..8e83ff23a
--- /dev/null
+++ b/2243/CH14/EX14.3/Res14_3.txt
@@ -0,0 +1 @@
+Difference = 0.025 A 
\ No newline at end of file
diff --git a/2243/CH14/EX14.5/Ex14_5.sce b/2243/CH14/EX14.5/Ex14_5.sce
new file mode 100755
index 000000000..6d18ac65d
--- /dev/null
+++ b/2243/CH14/EX14.5/Ex14_5.sce
@@ -0,0 +1,16 @@
+clc();

+clear;

+//Given :

+tau_c = 10^-5; // lifetime of lasing energy in s

+tau_c1 = 10^-8; // coherence time in s

+lambda = 5000; // wavelength in A

+c = 3*10^8;// light speed in m/s

+// Ratio = delta_lambda/lambda   = lambda/(c*tau_c)

+// 1 A = 1.0*10^-10 m

+//(a)Laser source

+Ratio = (lambda*10^-10)/(c*tau_c);

+//(b)Ordinary source

+Ratio1 = (lambda*10^-10)/(c*tau_c1);

+printf("Laser source = %.2f x 10^-10 \n",Ratio*10^10);

+printf("Ordinary  source = %.2f x 10^-7 \n",Ratio1*10^7);

+//Results obtained differ from those in textbook, beacuse only order of 10 was considered in the result.

diff --git a/2243/CH14/EX14.5/Res14_5.txt b/2243/CH14/EX14.5/Res14_5.txt
new file mode 100755
index 000000000..5cb0ff3a6
--- /dev/null
+++ b/2243/CH14/EX14.5/Res14_5.txt
@@ -0,0 +1,4 @@
+ Laser source = 1.67 x 10^-10 

+Ordinary  source = 1.67 x 10^-7 

+ 

+ 
\ No newline at end of file
diff --git a/2243/CH14/EX14.6/Ex14_6.sce b/2243/CH14/EX14.6/Ex14_6.sce
new file mode 100755
index 000000000..ba37d4af0
--- /dev/null
+++ b/2243/CH14/EX14.6/Ex14_6.sce
@@ -0,0 +1,12 @@
+clc();

+clear;

+//Given :

+P = 10; // Power in W

+lambda =5000; // wavelength in A

+SI = 7*10^3; // Sun's radiation intensity in W/cm^2

+// 1 A = 1.0*10^-8 cm

+I = P/(lambda*10^-8)^2; //Intensity in W/cm^2

+Ratio = (I)/SI; 

+printf("Intensity =  %.0f x 10^6 kW/cm^2 \n",I*10^-9);

+printf("Intensity of this laser source is %.1f x 10^6 times the intensity of Sun radiation",Ratio*10^-6);

+//Textbook : Only order of 10 is considered in the result

diff --git a/2243/CH14/EX14.6/Res14_6.txt b/2243/CH14/EX14.6/Res14_6.txt
new file mode 100755
index 000000000..1bcc6c569
--- /dev/null
+++ b/2243/CH14/EX14.6/Res14_6.txt
@@ -0,0 +1,2 @@
+ Intensity =  4 x 10^6 kW/cm^2 

+Intensity of this laser source is 0.6 x 10^6 times the intensity of Sun radiation 
\ No newline at end of file
diff --git a/2243/CH14/EX14.7/Ex14_7.sce b/2243/CH14/EX14.7/Ex14_7.sce
new file mode 100755
index 000000000..83779eaf2
--- /dev/null
+++ b/2243/CH14/EX14.7/Ex14_7.sce
@@ -0,0 +1,19 @@
+clc();

+clear;

+//Given :

+c = 3*10^8;// light speed in m/s

+//Visible range = 4000 A - 7000 A

+lambda1 = 4000; // wavelength in A

+lambda2 = 7000;// wavelength in A

+// 1 A = 1.0*10^-10 m

+nu1 = c/(lambda1*10^-10); // frequency in Hz

+nu2 = c/(lambda2*10^-10);// frequency in Hz

+deltanu = nu1-nu2; // in Hz

+//(a)Telephone conversations

+f1 = 10^3; // frequency in Hz

+n1 = deltanu/f1;

+//(b)Television programmes

+f2 = 10^7; // frequency in Hz

+n2 = deltanu/f2;

+printf(" Number of Telephone conversations = %.1f x 10^11 \n",n1*10^-11);

+printf(" Number of Television programmes  = %.1f x 10^7 \n",n2*10^-7);

diff --git a/2243/CH14/EX14.7/Res14_7.txt b/2243/CH14/EX14.7/Res14_7.txt
new file mode 100755
index 000000000..f2d5e84b3
--- /dev/null
+++ b/2243/CH14/EX14.7/Res14_7.txt
@@ -0,0 +1,2 @@
+  Number of Telephone conversations = 3.2 x 10^11 

+ Number of Television programmes  = 3.2 x 10^7 
\ No newline at end of file