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JEE Main202310 Apr 2023Morning ShiftPhysicsAtomic PhysicsActual

The angular momentum for the electron in Bohr’s orbit is L . If the electron is assumed to revolve in second orbit of hydrogen atom, then the change in angular momentum will be

Options

  1. AZero
  2. B2 L
  3. CL
  4. DL 2

Correct answer

C. L

Step-by-step solution

Bohr's formula for angular momentum of an electron in an orbit is given by L = n h 2 π For the first orbit, n = 1 and the angular momentum is L 1 = h 2 π = L For 2 nd orbit L 2 = 2 h 2 π = 2 L Hence, the change in angular momentum is Δ L = 2 L - L = L

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