1 files changed, 26 insertions, 0 deletions
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