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NEET2012PhysicsAtomic PhysicsActual

An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquired as a result of photon emission will be ( m is the mass of the electron, R Rydberg constant and h Planck's constant)

Options

  1. A24 h R 25 m
  2. B25 h R 24 m
  3. C25 m 24 h R
  4. D24 m 25 h R

Correct answer

A. 24 h R 25 m

Step-by-step solution

Here, E₅-E₁= h c gathered R h c 25 -R h c= h c 24 25 R= 1 gathered But aligned P & = h v & = h m & = 24 25 R h m aligned

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