Q. What determines the hardness of the $X$-rays obtained from the Coolige tube
A) Current in the filament
B) Pressure of air in the tube
C) Nature of target
D) Potential difference between cathode and target
Explanation
(d) Hard $X$-rays are of higher energy and the energy of $X$-rays depends on the potential difference between the cathode and the target
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.