2 files changed, 21 insertions, 0 deletions
diff --git a/1271/CH14/EX14.25/25.txt b/1271/CH14/EX14.25/25.txt
new file mode 100755
index 000000000..1975f7c12
--- /dev/null
+++ b/1271/CH14/EX14.25/25.txt
@@ -0,0 +1,5 @@
+ # PROBLEM 25 # 
+Standard formula used 
+  1/2*m*v^2 = h*c*(1/lambda1 - 1/lambda2)
+
+ Wavelength of incident beam is 0.365115 Angstrom.
diff --git a/1271/CH14/EX14.25/example14_25.sce b/1271/CH14/EX14.25/example14_25.sce
new file mode 100755
index 000000000..b0d2bf3a2
--- /dev/null
+++ b/1271/CH14/EX14.25/example14_25.sce
@@ -0,0 +1,16 @@
+clc 
+// Given that
+E = 4 // enrgy of recoil electron in KeV
+theta = 180 // scattered angle of photon in degree
+h = 6.62e-34 // Planck constant in J-sec
+c = 3e8 // speed of light in m/sec
+e = 1.6e-19 // charge on an electron in C 
+m = 9.1e-31 // mass of an electron in kg
+// Sample Problem 25 on page no. 14.30
+printf("\n # PROBLEM 25 # \n")
+printf("Standard formula used \n ")
+printf(" 1/2*m*v^2 = h*c*(1/lambda1 - 1/lambda2)\n")
+p = sqrt(2 * E * 10^3 * e * m)
+lambda = (2 * h * c) / (p * c + E * 10^3 * e)
+printf("\n Wavelength of incident beam is %f Angstrom.",lambda * 1e10)
+