Practice portal › Units and Measurements › Match the Column: Dimensions
| List-I | List-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 |
Asked in JEE Main 27th Aug 2nd Shift 2021 · Matching quantities to their dimensions
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.
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