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clc
//
//
//
//Variable declaration
muclad=1.48 //Refractive index of claddings
mucore=1.5 //Refractive index of core
//Calculations
thetac=(180/%pi)*(asin(muclad/mucore))
fri=(mucore-muclad)/mucore
aa=(sqrt((mucore**2)-(muclad**2)))
NA=sin(aa)
//Result
printf("\n (a) The critical angle is :%2.2f degrees",thetac)
printf("\n (b) The Fractional refractive index is :%1.3f ",fri)
printf("\n (c) The Acceptance angle is :%1.3f Radians",aa)
printf("\n (d) The Numerical Apperture is :%1.3f ",NA)
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