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A nucleus of ${}_{84}^{210}{Po}$ originally at rest emits $α -$ particle with speed v. What will be the recoil speed of the daughter nucleus?

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4v/206

4v/214

v/206

v/214

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detailed solution

Correct option is A

Po 210 84 →X 206 82 +He 4 2 Using conservation of linear moments206v'+4v=0⇒v'=-4v206⇒v'=4v206

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A nucleus of Po 84210 originally at rest emits α- particle with speed v. What will be the recoil speed of the daughter nucleus?

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A nucleus of ${}_{84}^{210}{Po}$ originally at rest emits $α -$ particle with speed v. What will be the recoil speed of the daughter nucleus?