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A particle A of mass m and initial veloc...

A particle A of mass m and initial velocity v collides with a particle of mass `m//2` which is at rest. The collision is head on, and elastic. The ratio of the de-broglie wavelength `lambda_(A) and lambda_(B)` after the collision is

A

`lambda_(A)/lambda_(B) = 2/3`

B

`lambda_(A)/lambda_(B) = 1/2`

C

`lambda_(A)/lambda_(B) = 1/3`

D

`lambda_(A)/lambda_(B) =2`

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The correct Answer is:
D
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