Question

Which of the following pair has same dimensions? A. Current density and charge density B. Angular momentum and momentum C. Spring constant and surface energy D. Force and torque

Answer 1

Answer ⇒ Option (C). Spring Constant and Surface Energy.

Explanation ⇒

Dimensional Formula of the Surface Energy = ML°T⁻²

Dimensional Formula of the Surface Energy = ML°T⁻²

In both the dimensional formula, fundamental units are same and are with the same powers. Hence, Option (c). is correct.

In others three options dimensions of both the quantities given in each option are different thus they cannot be correct.

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Answer 2

Option c

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