3769/CH22/EX22.1/Ex22_1.sce


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clear
//Given
D=1                           //m
l=5*10**-7                      //m
d=0.1*10**-3                    //m

//Calculation
W=(2*D*l)/d

//Result
printf("\n Width of the central maximum is %0.3f  cm", W*10**2)