JEE Main 2025 Jan 29 Shift 1, Physics Q4: Units And Dimensions

JEE Main2025Jan 29, Shift 1Physics

The pair of physical quantities not having same dimensions is :

Solution

Check each pair:

Torque and energy: $[M L^{2} T^{- 2}]$ each. Same. $✓$

Surface tension: $[M T^{- 2}]$ (force per length). Impulse: $[M L T^{- 1}]$ (force $\times$ time). Different. $\times$

Angular momentum and Planck's constant: $[M L^{2} T^{- 1}]$ each. Same. $✓$

Pressure and Young's modulus: $[M L^{- 1} T^{- 2}]$ each. Same. $✓$

Therefore the odd pair is surface tension and impulse.

Concept behind this question

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