A radioactive nucleus of mass number A, ...

A radioactive nucleus of mass number A, initially at rest, emits an `alpha-` particle with a speed v. What will be the recoil speed of the daughter nucleus ?

`(2v)/(A+4)`

`(4v)/(A+4)`

`(4v)/(A-4)`

`(2v)/(A-4)`

Text Solution

Verified by Experts

Momentum would be conserved with mass number .
`A(0+4v=(A+4)V `
Recoil speed , `V=(4v)/(A+4)`

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