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clear
//
//
//
//Variable declaration
D=150 //slit screen distance(cm)
d=0.03 //separation(cm)
beta1=0.3 //fringe separation(cm)
//Calculation
lamda=d*beta1*10**8/D //wavelength of light(angstrom)
//Result
printf("\n wavelength of light is %0.0f angstrom",lamda)
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