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//Example 1_13
clc();
clear;
//To calculate the fringe width
dist1=0.005 //units in mm
dist2=15 //units in cm
alpha=dist1/dist2 //units in radians
lamda=6000*10^-9 //units in cm
betaa=(lamda)/(2*alpha) //units in
printf("Fringe width beta=%.3fcm",betaa)
//In text book answer is printed wrong as 0.09 cm answer is 0.009 cm
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