Q. For the structural analysis of crystals, $X$-rays are used because
A) $X$-rays have wavelength of the order of interatomic spacing
B) $X$-rays are highly penetrating radiations
C) Wavelength of $X$-rays is of the order of nuclear size
D) $X$-rays are coherent radiations
Explanation
(a) Interatomic spacing in a crystal acts as a diffraction grating
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.