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Match List-I with List-II.
List-IList-II
(A) R_H (Rydberg constant)(i) kg m⁻¹ s⁻¹
(B) h (Planck's constant)(ii) kg m² s⁻¹
(C) μ_B (Magnetic field energy density)(iii) m⁻¹
(D) η (coefficient of viscosity)(iv) kg m⁻¹ s⁻²

Choose the most appropriate answer from the options given below.

Asked in JEE Main 27th Aug 2nd Shift 2021 · Matching quantities to their dimensions

Answer: (3) (A)-(iii), (B)-(ii), (C)-(iv), (D)-(i)

Step-by-step solution

A: the Rydberg constant appears as a reciprocal wavelength, m⁻¹, so (iii).

B: Planck's constant is energy times time, kg m² s⁻¹, so (ii).

C: a magnetic field energy density is energy per unit volume, kg m⁻¹ s⁻², so (iv).

D: viscosity is kg m⁻¹ s⁻¹, so (i).

Hence A-iii, B-ii, C-iv, D-i.

Why the other options are wrong

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