1.

A nucleus at rest splits into two nuclear parts having radii in the ratio: 1:2. Their velocities are in the ratio:

Answer»

`6:1`
`2:!`
`8:1`
`4:1`

SOLUTION :`m_(1)v_(1)=m_(2)v_(2)`
`4//3pir_(1)^(3).pv_(1)=4//33pir_(2)^(3).pv_(2)`
Here `r_(2)=2r_(1)`
`4//3pir_(1)^(3).pv_(1)=4//3pi(2r_(1))^(3).v_(2)`
`v_(1)=8v_(2)`
`v_(1)/v_(2)=8/1`


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