Q. Which of the following pairs has same dimensions?
A) Current density and charge density
B) Angular momentum and momentum
C) Spring constant and surface energy
D) Force and torque
Explanation
Spring constant $= \frac{F}{l} = \left\lbrack ML^{0}T^{- 2} \right\rbrack.$ Surface energy $= \frac{Energy}{Area} = \lbrack ML^{0}T^{- 2}\rbrack$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.