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clear
//
//
//
//Variable declaration
n1=1.5; //core refractive index
n2=1.48; //cladding refractive index
n=1;
//Calculations
NA=sqrt(n1^2-n2^2); //numerical aperture
i0=asin(NA/n); //maximum entrance angle(radian)
i0=i0*180/%pi ; //maximum entrance angle(degrees)
//Result
printf("\n numerical aperture is %0.5f ",NA)
printf("\n maximum entrance angle is %0.2f degrees",i0)
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