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clc
//
//
//
//Variable declaration
a=25*10**-6 //core radius
lambdaa=0.85*10**-6 //Wavelength
NA=0.22 //Numerical Aperture
//Calculations
V=((2*3.14*a*0.22)/lambdaa)
N=((V**2)/4)
//Result
printf("\n (a) The V number is %2.2f ",V)
printf("\n (b) The number of modes are %3.2f ",N)
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