1 files changed, 23 insertions, 0 deletions
diff --git a/3840/CH4/EX4.13/Ex4_13.sce b/3840/CH4/EX4.13/Ex4_13.sce
new file mode 100644
index 000000000..d0b6fe232
--- /dev/null
+++ b/3840/CH4/EX4.13/Ex4_13.sce
@@ -0,0 +1,23 @@
+clear
+//
+//
+//
+
+//Variable declaration
+L=1*10**-10    //length(m)
+n3=3
+m=9.11*10**-31    //mass(kg)
+e=1.6*10**-19    //charge(c)
+h=6.63*10**-34   //plank constant
+
+//Calculation
+E1=h**2/(8*m*e*L**2)    //g state energy(eV)
+
+E3=n3**2*E1      //energy of 2nd excited state(eV)
+E=E3-E1          //energy required to pump an electron(eV) 
+
+//Result
+printf("\n ground state energy is %0.3f  eV",E1)
+printf("\n energy of 2nd excited state is %0.2f  eV",E3)
+printf("\n energy required to pump an electron is %0.2f  eV",E)
+printf("\n answer given in the book is wrong")