A nucleus of uranium decays at rest into nuclei of thorium and helium. Then
Text Solution
Verified by ExpertsThe correct answer is:
C
If 
and 
and 
are the momenta of thorium and helium nuclei respectively, then according to law of conservation of linear momentum
or 
‐ve sign shows that both are moving in opposite directions.
But in magnitude
If 
and 
are the masses of thorium and helium nuclei respectively, then
Kinetic energy of thorium nucleus is 
and that of helium nucleus is
But 
and 
or 
Thus the helium nucleus has more kinetic energy than the thorium nucleus.
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