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JEE Main20209 Jan 2020Morning ShiftPhysicsUnits and DimensionsActual

A quantity f is given by f = h c 5 G where c is speed of light, G univasal gravitational constant and h is the Planck’s constant. Dimension of f is that of:

Options

  1. Aarea
  2. Benergy
  3. Cmomentum
  4. Dvolume

Correct answer

B. energy

Step-by-step solution

h c = M L T - 2 3 c = L T - 1 G = M - 1 L 3 T - 2 Substituting the dimensional formulas in the given formula, f = M L 2 T - 2

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