Question

A nucleus of uranium decays at rest into nuclei of thorium
and helium. Then : [2015 RS]
(a) the helium nucleus has less momentum than the
thorium nucleus.
(b) the helium nucleus has more momentum than the
thorium nucleus.
(c) the helium nucleus has less kinetic energy than the
thorium nucleus.
(d) the helium nucleus has more kinetic energy than the
thorium nucleus.

Answer 1

Answer:

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Answer 2

Answer:

(c) the helium nucleus has less kinetic energy than the  thorium nucleus.

Explanation:

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