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//Example 1_7
clc;
clear;
//Calculate the fringe width
d=0.2 //units in mm
d=0.2*10^-3 //units in mts
lamda=550 //units in nm
lamda=550*10^-9 //units in mts
D=1 //units in mts
betaa=(lamda*D)/d //units in mts
betaa=betaa*10^3 //units in mm
printf("Fringe width on a screen at a distance of 1m from the slits is %.2fmm",betaa)
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