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clc
// Given that
lambda1 = 6e-7 // wavelength of first light in meter
lambda2 = 5e-7 // wavelength of second light in meter
f1 = 1 // focal length in first case in meter
// Sample Problem 9 on page no. 2.41
printf("\n # PROBLEM 9 # \n")
f2 = (lambda1 * f1) / lambda2 // calculation for focal length in second case
printf("\n Standard formula used \n f2 = (lambda1 * f1) / lambda2")
printf("\n Focal length in second case = %f meter",f2)
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