Photoelectric EffectHard
Question
Free 238U nuclei kept in a train emit alpha particles. When the train is stationery and a uranium nucleus decays, a passenger measures that the separation between the alpha particle and the recoiling nucleus becomes x in time t after the decay. If a decay takes place when the train is moving at a uniform speed υ, the distance between the alpha particle and the recoiling nucleus at a time t after the decay, as measured by the passenger will be -
Options
A.x + υt
B.x - υt
C.x
D.depends on the direction of the train
Solution
The decay law will remain same even in the train. The velocities of the a-particle and the recoiling nucleus will be same on the ground and in the train with respect to train.
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