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Dual Nature of Radiation question

2017 · Shift 0 · Q69
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Dual Nature of Radiation question

2017 · Shift 0 · Q69

JEE MainPhysicsDual Nature of RadiationMCQ+4 / −1
A particle A of mass m and initial velocity v collides with a particle B of mass m/2 which is at rest. The collision is head on, and elastic. The ratio of the de-Broglie wavelengths λA{\lambda _A}λA​ to λB{\lambda _B}λB​ after the collision is:
  1. A
    λAλB=13{{{\lambda _A}} \over {{\lambda _B}}} = {1 \over 3}λB​λA​​=31​
  2. B
    λAλB=2{{{\lambda _A}} \over {{\lambda _B}}} = 2λB​λA​​=2
  3. C
    λAλB=23{{{\lambda _A}} \over {{\lambda _B}}} = {2 \over 3}λB​λA​​=32​
  4. D
    λAλB=12{{{\lambda _A}} \over {{\lambda _B}}} = {1 \over 2}λB​λA​​=21​
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