Identify the pair of physical quantities which have different dimensions: (a) Wave number and Rydberg's constant (b) Stress and Coefficient of elasticity (c) Coercivity and Magnetisation (d) Specific heat capacity and Latent heat

Answer: (d). Wave number and Rydberg constant: both L⁻¹. Stress and modulus: both ML⁻¹T⁻². Coercivity and magnetisation: both A/m. Specific heat c = Q/(mΔ T): L²T⁻²K⁻¹; latent heat Q/m: L²T⁻². Different. So the answer is (d).

Identify the pair of physical quantities which have different… | JEE Main 2022 (24 Jun, Shift 1)

Q53JEE Main 2022 · 24 JUN · SHIFT 1Easy

Units & Dimensions

Identify the pair of physical quantities which have different dimensions:

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Answer: (d)

Wave number and Rydberg constant: both $\mathrm{L^{-1}}$ . Stress and modulus: both $\mathrm{ML^{-1}T^{-2}}$ . Coercivity and magnetisation: both $\mathrm{A/m}$ .
Specific heat $c = Q/(m\Delta T)$ : $\mathrm{L^2T^{-2}K^{-1}}$ ; latent heat $Q/m$ : $\mathrm{L^2T^{-2}}$ . Different.
So the answer is (d).

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