6 files changed, 91 insertions, 0 deletions
diff --git a/3717/CH2/EX2.1/Ex2_1.sce b/3717/CH2/EX2.1/Ex2_1.sce
new file mode 100644
index 000000000..fc2b6bb74
--- /dev/null
+++ b/3717/CH2/EX2.1/Ex2_1.sce
@@ -0,0 +1,11 @@
+// Ex2_1 Page:28 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+nu = 100e+06;   // Operational frequency of the source, Hz
+P = 100e+03;    // Power radiated by the source, W
+E = h*nu;   // Energy radiated by the source, J
+n = P/E;    // Number of quanta of energy per second
+printf("\nThe number of photons emitted per second = %5.3e photons/s", n);
+
+// Result
+// The number of photons emitted per second = 1.509e+30 photons/s 
diff --git a/3717/CH2/EX2.2/Ex2_2.sce b/3717/CH2/EX2.2/Ex2_2.sce
new file mode 100644
index 000000000..fc7cbea66
--- /dev/null
+++ b/3717/CH2/EX2.2/Ex2_2.sce
@@ -0,0 +1,18 @@
+// Ex2_2 Page:31 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08;  // Speed of light, m/s
+e = 1.6e-019;   // Energy equivalent of 1 eV, J
+m = 9.1e-031;   // Mass of an electron, kg
+w0 = 2.28;  // Work function of sodium, eV
+lambda = 400e-09;   // Wavelength of light, m
+nu = c/lambda;    // Frequency of light, Hz
+KE_max = h*nu/e - w0;  // Maximum kinetic energy of photoelectrons, eV
+v = sqrt(2*KE_max*e/m);   // Speed of photoelectrons, m/s
+printf("\nThe maximum kinetic energy of photoelectrons = %5.3f eV", KE_max);
+printf("\nThe speed of photoelectrons = %4.2e m/s", v);
+
+// Result
+// The maximum kinetic energy of photoelectrons = 0.826 eV
+// The speed of photoelectrons = 5.39e+05 m/s 
+
diff --git a/3717/CH2/EX2.3/Ex2_3.sce b/3717/CH2/EX2.3/Ex2_3.sce
new file mode 100644
index 000000000..303b93b15
--- /dev/null
+++ b/3717/CH2/EX2.3/Ex2_3.sce
@@ -0,0 +1,17 @@
+// Ex2_3 Page:31 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08;  // Speed of light, m/s
+e = 1.6e-019;   // Energy equivalent of 1 eV, J
+w0 = 4.2;  // Work function of aluminium, eV
+lambda = 2000e-10;   // Wavelength of incident light, m
+lambda0 = h*c/(w0*e);  // The cut-off wavelength for aluminium, m
+E = h*c/(lambda*e); // Energy of 2000 angstrom photon, eV
+KE = E - w0;    // Kinetic energy of fastest electron, eV
+printf("\nThe cut-off wavelength for aluminium = %4d angstrom", lambda0/1e-010);
+printf("\nThe stopping potential = %4.2f V", KE);
+
+// Result
+// The cut-off wavelength for aluminium = 2958 angstrom
+// The stopping potential = 2.01 V 
+
diff --git a/3717/CH2/EX2.4/Ex2_4.sce b/3717/CH2/EX2.4/Ex2_4.sce
new file mode 100644
index 000000000..360219efe
--- /dev/null
+++ b/3717/CH2/EX2.4/Ex2_4.sce
@@ -0,0 +1,14 @@
+// Ex2_4 Page:33 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08;  // Speed of light, m/s
+lambda = 0.2e-09;   // Wavelength of photon, m
+p = h/lambda;   // Momentum of the photon, kgm/s
+m = p/c;    // Effective mass of photon, kg
+printf("\nThe momentum of the photon = %3.1e kg-m/s", p);
+printf("\nThe effective mass of photon = %3.1e kg", m);
+
+// Result
+// The momentum of the photon = 3.3e-24 kg-m/s
+// The effective mass of photon = 1.1e-32 kg 
+
diff --git a/3717/CH2/EX2.5/Ex2_5.sce b/3717/CH2/EX2.5/Ex2_5.sce
new file mode 100644
index 000000000..892b95a50
--- /dev/null
+++ b/3717/CH2/EX2.5/Ex2_5.sce
@@ -0,0 +1,18 @@
+// Ex2_5 Page:35 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08;  // Speed of light, m/s
+m0 = 9.1e-031;  // Mass of the electron, kg
+lambda = 0.15e-09;  // Wavelength of the incident X-rays, m
+theta = zeros(3);   // Declare a row matrix for theta
+theta = [0, 90, 180];   // Scattering angles of photons, degree
+for i = 1:3
+    lambda_prime = lambda + h/(m0*c)*(1 - cosd(theta(i)));  // New wavelength due to Compton Shift, m
+    printf("\nThe wavelength of X-rays scattered at %d degrees = %5.3f nm", theta(i), lambda_prime/1e-09); 
+end
+
+// Result
+// The wavelength of X-rays scattered at 0 degrees = 0.150 nm
+// The wavelength of X-rays scattered at 90 degrees = 0.152 nm
+// The wavelength of X-rays scattered at 180 degrees = 0.155 nm 
+
diff --git a/3717/CH2/EX2.6/Ex2_6.sce b/3717/CH2/EX2.6/Ex2_6.sce
new file mode 100644
index 000000000..af4342bd5
--- /dev/null
+++ b/3717/CH2/EX2.6/Ex2_6.sce
@@ -0,0 +1,13 @@
+// Ex2_6 Page:36 (2014)
+clc; clear;
+h = 6.626e-034; // Planck's constant, Js
+c = 3e+08;  // Speed of light in vacuum, m/s
+E0 = 0.511; // Rest energy of an electron, MeV
+e = 1.6e-019;   // Energy equivalent of 1 eV, J
+E = 2*E0*e*1e+06; // Rest energy of electron-positron pair, J
+lambda = h*c/E; // Wavelength of photon to bring pair production, m
+printf("\nWavelength of a photon that can produce an electron-positron pair = %4.2e m", lambda);
+
+// Result
+// Wavelength of a photon that can produce an electron-positron pair = 1.22e-12 m 
+