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JEE Main202117 Mar 2021Morning ShiftPhysicsAtomic PhysicsActual

If an electron is moving in the n th orbit of the hydrogen atom, then its velocity ( v n ) for the n th orbit is given as:

Options

  1. Av n ∝ n
  2. Bv n ∝ 1 n
  3. Cv n ∝ n 2
  4. Dv n ∝ 1 n 2

Correct answer

B. v n ∝ 1 n

Step-by-step solution

We know velocity of electron in n th  shell of hydrogen atom is given by v = 2 π k Z e 2 n h ∴ v ∝ 1 n

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