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//Example 2.3 // slit width
clc;
clear;
//given data :
w=6D-7;// wavelength of light used in m
D=2;// screen is placed at distance in m
x=5D-3;// first minima lies at distance to central maxima
a=(w*D)/x;//slit width in m
disp(a,"slit width in m")
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