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clear;
clc;
printf("\nEx1.15\n");
//page no.-25
//given
theta=12;.......//angle in degrees
n=1;............//order of spectrum
d=3.035;....//interatomic spacing in angstrom
lambda=(2*d*sind(12))/n.........//wavelength in angstrom
printf("\nwavelength of X ray beam is 1.262 angstrom\n");
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