From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001
From: priyanka
Date: Wed, 24 Jun 2015 15:03:17 +0530
Subject: initial commit / add all books

---
 1271/CH15/EX15.21/21.txt           |  8 ++++++++
 1271/CH15/EX15.21/example15_21.sce | 19 +++++++++++++++++++
 2 files changed, 27 insertions(+)
 create mode 100755 1271/CH15/EX15.21/21.txt
 create mode 100755 1271/CH15/EX15.21/example15_21.sce

(limited to '1271/CH15/EX15.21')

diff --git a/1271/CH15/EX15.21/21.txt b/1271/CH15/EX15.21/21.txt
new file mode 100755
index 000000000..0e700d524
--- /dev/null
+++ b/1271/CH15/EX15.21/21.txt
@@ -0,0 +1,8 @@
+ # PROBLEM 21 # 
+Standard formula used 
+ E = (n^2 * h^2) / (8 * m * L^2)) 
+
+ Energy Eigen values -
+ For (n=2) for 80.000000 eV.
+ For (n=3) is 180.000000 eV.
+ For (n=4) is 320.000000 eV.
diff --git a/1271/CH15/EX15.21/example15_21.sce b/1271/CH15/EX15.21/example15_21.sce
new file mode 100755
index 000000000..bcd2d5560
--- /dev/null
+++ b/1271/CH15/EX15.21/example15_21.sce
@@ -0,0 +1,19 @@
+clc 
+// Given that
+E1 = 3.2e-18 // minimum energy possible for a particle entrapped in a one dimensional box in J
+e = 1.6e-19 // charge on an electron in C
+m = 9.1e-31 // mass of electron in kg
+c = 3e8 // speed of light in m/sec
+h = 6.62e-34 // Planck constant in J-sec
+// Sample Problem 21 on page no. 15.32
+printf("\n # PROBLEM 21 # \n")
+printf("Standard formula used \n")
+printf(" E = (n^2 * h^2) / (8 * m * L^2)) \n")
+E1 = E1 / e // in eV
+n = 2 // for n=2
+E2 = n^2 * E1
+n = 3 // for n=3
+E3 = n^2 * E1
+n = 4 // for n=4
+E4 = n^2 * E1
+printf("\n Energy Eigen values -\n For (n=2) for %f eV.\n For (n=3) is %f eV.\n For (n=4) is %f eV.",E2,E3,E4)
-- 
cgit