A stationary hydrogen atom emits photon corresponding to the first line of Lyman series. If R is the Rydberg constant and M is the mass of the atom, then the velocity acquired by the atom isA. `(3)/(4) (R h)/(M)`B. `(R h)/(4 M)`C. `(R h)/(2 M)`D. `(R h)/(M)`

A stationary hydrogen atom emits photon corresponding to the first lin

1.	A stationary hydrogen atom emits photon corresponding to the first line of Lyman series. If R is the Rydberg constant and M is the mass of the atom, then the velocity acquired by the atom isA. `(3)/(4) (R h)/(M)`B. `(R h)/(4 M)`C. `(R h)/(2 M)`D. `(R h)/(M)`
Answer» Correct Answer - A From conservation of momentum: `M V = (h)/(lambda) = h R (1 - 1/(4)) implies V = (3)/(4) (h R)/(M)`

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A stationary hydrogen atom emits photon corresponding to the first line of Lyman series. If R is the Rydberg constant and M is the mass of the atom, then the velocity acquired by the atom isA. `(3)/(4) (R h)/(M)`B. `(R h)/(4 M)`C. `(R h)/(2 M)`D. `(R h)/(M)`

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