A radioactive nucleus of mass 
emits a photon of frequency 
and the nucleus recoils. The recoil energy will be
A
B
C
zero
D
Text Solution
Verified by ExpertsThe correct answer is:
B
Momentum of emitted photon
From the law of conservation of linear momentum, Momentum of recoil nucleus
where 
is the recoil speed of the nucleus
or 
(i)
The recoil energy of the nucleus
(Using(i))
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