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//Example 1_42
clc();
clear;
//To find the fringe width
lemda=5000 //units in angstroam
lemda=5000*10^-8 //units in cm
d=0.05 //units in cm
D=50 //units in cm
betaa=(lemda*D)/d
printf("Fringe width is %.2f cm",betaa)
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