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JEE · NEET Previous Year Question

$Which of the following pairs has same dimensions?$

Topic: JEE PYQ

Answer: C. Full step-by-step solution below.

A $Current density and charge density$
B $Angular momentum and linear momentum$
C $Spring constant and surface energy$
D $Force and torque$

Correct answer: C

Solution

(c) Spring constant, k = \frac{F}{x}, unit of spring constant = \frac{N}{m} surface energy = \frac{Energy}{Area} = \frac{Joule}{m ^{2}} = \frac{Nm}{m ^{2}} = \frac{N}{m}

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