Q. The structure of solid crystals is investigated by using
A) Cosmic rays
B) $X$-rays
C) Infrared radiations
D) $\gamma$-rays
Explanation
(b) $X$-rays have high energy. They penetrate into the solid crystal and are used to find out the internal structure
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.