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clear
//
//
//
//Variable declaration
n1=1.6 //Core refractive index
n2=1.4 //Cladding refractive index
n0=1.33 //water refractive index
//Calculation
NA=sqrt(n1**2-n2**2)/n0 //numerical aperture
theta0=asin(NA)*180/%pi //acceptance angle(degrees)
//Result
printf("\n numerical aperture is %0.3f ",NA)
printf("\n acceptance angle is %0.4f degrees",theta0)
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