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

---
 2258/CH1/EX1.20/1_20.sce | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100755 2258/CH1/EX1.20/1_20.sce

(limited to '2258/CH1/EX1.20')

diff --git a/2258/CH1/EX1.20/1_20.sce b/2258/CH1/EX1.20/1_20.sce
new file mode 100755
index 000000000..678faefbf
--- /dev/null
+++ b/2258/CH1/EX1.20/1_20.sce
@@ -0,0 +1,26 @@
+clc();
+clear;
+// To calculate the energies of electron
+n2=2;    //second quantum state
+n4=4;    //fourth quantum state
+h=6.626*10^-34;
+m=9.1*10^-31;   //mass in kg
+a=2;   //potential box length in armstrong
+a=a*10^-10;    //length in m
+A=n2^2*h^2;
+B=8*m*a^2;
+E2=A/B;    //energy in j
+E2eV=E2/(1.6*10^-19);    //energy in eV
+C=n4^2*h^2;
+E4=C/B;    //energy in j
+E4eV=E4/(1.6*10^-19);    //energy in eV
+printf("energy corresponding to second quantum state in Joule is");
+disp(E2);
+printf("energy corresponding to second quantum state in eV is");
+disp(E2eV);
+printf("energy corresponding to fourth quantum state in Joule is");
+disp(E4);
+printf("energy corresponding to fourth quantum state in eV is");
+disp(E4eV);
+
+//answers given in the book are wrong
-- 
cgit