An 
-particle of mass 
suffers one dimensional elastic collision with a nucleus of unknown mass. After the collision, the 
-particle is scattered directly backwards losing 
of its kinetic energy. Then, the mass of the nucleus is
A
m
B
C
3 m
D
Text Solution
Verified by ExpertsThe correct answer is:
C
Loss of kinetic energy,
…… .(i)
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