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MHT CET202016 Oct 2020Morning ShiftPhysicsAtomic PhysicsActual

The ratio of speed of an electron in the ground state in the Bohr's first orbit of hydrogen atom to velocity of light (c) is (h = Planck's constant, ₀= permittivity of free space, e = charge on electron )

Options

  1. A2 e ² ₀ h C
  2. B2 ₀ h c e²
  3. Ce² 2 ₀ h c
  4. De³ 2 E₀ h c

Correct answer

C. e² 2 ₀ h c

Step-by-step solution

The velocity of electron in Bohr's first orbit is aligned V &= e ² 2 ₀ ~h V c &= e ² 2 ₀ hc aligned

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