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clear;
clc;
printf("\nEx1.23\n");
//page no.-34
//given
d=0.282*10^-9;...........//lattice spacing in m
theta=8.5833;.............//glancing angle
n=1;......................//order
//From Bragg's law
lambda=(2*d*sind(theta))/n...........//wavelength in m
//for max order of diffraction theta is 90 degree
no=2*d*sind(90)/lambda.........//maximum order of diffraction
printf("\nmax order of diffraction is 7 approx\n");
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