1 files changed, 21 insertions, 0 deletions
diff --git a/3869/CH4/EX4.2/Ex4_2.sce b/3869/CH4/EX4.2/Ex4_2.sce
new file mode 100644
index 000000000..b0d0277d6
--- /dev/null
+++ b/3869/CH4/EX4.2/Ex4_2.sce
@@ -0,0 +1,21 @@
+clear
+//
+//
+//
+
+//Variable declaration
+c=3*10**8               //velocity of light(m/sec)
+lamda=632.8*10**-9      //wavelength(m)
+h=6.626*10**-34         //planck's constant(Jsec)
+t=1                     //time(sec)
+P=2.3*10**-3            //power(W)
+sa=1*10**-6             //spot area(m**2)
+
+//Calculation
+new=c/lamda             //frequency(Hz)
+n=P*t/(h*new)           //number of photons emitted(per sec) 
+Pd=P/sa                 //power density(kW/m**2)
+
+//Result
+printf("\n number of photons emitted is %0.2f  *10**15 photons/second",n/10**15)
+printf("\n power density is %0.3f  kW/m**2",Pd/10**3)