Q. For most materials the Young’s modulus is $n$ times the rigidity modulus, where $n$ is
A) 2
B) 3
C) 4
D) 5
Explanation
(b) For most materials, the modulus of rigidity, $G$ is one third of the Young’s modulus, $\gamma$
$G = \frac{1}{3}\gamma$ or $\gamma = 3G$
$\therefore n = 3$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.