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clc//
//
//
//Variable declaration
n1=1.48; //refractive index of core
n2=1.45; //refractive index of cladding
//Calculation
NA=sqrt(n1^2-n2^2); //numerical aperture
alpha_i=asin(NA); //angle of acceptance(radian)
alpha_i=(alpha_i*180/%pi); //angle(degrees)
alpha_id=int(alpha_i);
alpha_im=60*(alpha_i-alpha_id);
//Result
printf("\n numerical aperture is %0.4f ",NA)
printf("\n angle of acceptance is %0.3f degrees %0.0f minutes",alpha_id,alpha_im)
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