1 files changed, 20 insertions, 0 deletions
diff --git a/3755/CH13/EX13.7/Ex13_7.sce b/3755/CH13/EX13.7/Ex13_7.sce
new file mode 100644
index 000000000..d09b8551d
--- /dev/null
+++ b/3755/CH13/EX13.7/Ex13_7.sce
@@ -0,0 +1,20 @@
+clear
+//
+//
+//
+
+//Variable declaration    
+vf=3*10^8;      //velocity of light in free space(m/s)
+vc=2*10^8;      //velocity of light in core(m/s)
+thetac=60*%pi/180;     //critical angle(radians)
+
+//Calculations
+n1=vf/vc;       //core refractive index
+n2=n1*sin(thetac);     //cladding refractive index
+NA=sqrt(n1^2-n2^2);    //numerical aperture
+
+//Result
+printf("\n core refractive index is %0.3f ",n1)
+printf("\n cladding refractive index is %0.1f ",n2)
+printf("\n numerical aperture is %0.3f ",NA)
+printf("\n answer for numerical aperture varies due to rounding off errors")