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A radioactive nucleus undergoes $α$ -emission to form a stable element. What will be the recoil velocity of the daughter nucleus if V is the velocity of $α$ -emission and A is the atomic mass of radioactive nucleus?

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4vA-4

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detailed solution

Correct option is A

According conservation of momentum4v=(A-4)v'⇒v'=4vA-4.

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A radioactive nucleus undergoes α-emission to form a stable element. What will be the recoil velocity of the daughter nucleus if V is the velocity of α-emission and A is the atomic mass of radioactive nucleus?

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A radioactive nucleus undergoes $α$ -emission to form a stable element. What will be the recoil velocity of the daughter nucleus if V is the velocity of $α$ -emission and A is the atomic mass of radioactive nucleus?