JEE Advanced 2021 Paper 1

Section: Physics

Question : 4 of 57

Marks: +1, -0

A heavy nucleus Q of half-life 20 minutes undergoes alpha decay with probability of 60% and beta-decay with probability of 40%. Initially, the number of Q nuclei is 1000 . The number of alpha-decays of Q in the first one hour is

[JEE Adv 2021 P1]

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