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A nucleus of uranium decays at rest into nuclei of thorium and helium.
Then :
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- the helium nucleus has less momentum than the thorium nucleus.
- the helium nucleus has more momentum than the thorium nucleus.
- the helium nucleus has less kinetic energy than the thorium nucleus.
- the helium nucleus has more kinetic energy than the thorium nucleus.
Correct Option: D
In an explosion a body breaks up into two pieces of unequal masses both part will have numerically equal momentum and lighter part will have more velocity.
U → Th + He
| KETh | , KEHe = | |||
| 2mTh | 2mHe |
since mHe is less so KETh will be more.
