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clear
//
//
//
//Variable declaration
a=3.16 //lattice parameter(angstrom)
theta=20.3*%pi/180 //glancing angle(radian)
lamda=1.54 //wavelength of X-rays(angstrom)
n=1 //order
//Calculation
d=n*lamda/(2*sin(theta)) //interplanar spacing(angstrom)
x=(a/d)**2
//Result
printf("\n interplanar spacing is %0.2f angstrom",d)
printf("\n answer for interplanar spacing given in the book is wrong")
printf("\n value of h**2+k**2+l**2 is %0.0f . hence the miller indices could be (110) (011) or (101)",x)
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