diff options
Diffstat (limited to '3763/CH9/EX9.1/Ex9_1.sce')
| -rw-r--r-- | 3763/CH9/EX9.1/Ex9_1.sce | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/3763/CH9/EX9.1/Ex9_1.sce b/3763/CH9/EX9.1/Ex9_1.sce new file mode 100644 index 000000000..43b2d6347 --- /dev/null +++ b/3763/CH9/EX9.1/Ex9_1.sce @@ -0,0 +1,23 @@ +clear +// +// +// + +//Variable declaration +ni1=2.5*10**19 //number of electron hole pairs +T1=300 //temperature(K) +Eg1=0.72*1.6*10**-19 //energy gap(J) +k=1.38*10**-23 //boltzmann constant +T2=310 //temperature(K) +Eg2=1.12*1.6*10**-19 //energy gap(J) + +//Calculation +x1=-Eg1/(2*k*T1) +y1=(T1**(3/2))*exp(x1) +x2=-Eg2/(2*k*T2) +y2=(T2**(3/2))*exp(x2) +ni=ni1*(y2/y1) //number of electron hole pairs + +//Result +printf("\n number of electron hole pairs is %0.2f *10**16 per cubic metre",ni/10**16) +printf("\n answer varies due to rounding off errors") |