Q.

In a photon-particle collision (such as photon electron collision), which of the following may not be conserved? 

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a

Total energy

b

Total momentum

c

Both (a) and (b)

d

Number of photons

answer is B.

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Detailed Solution

In a photon-particle collision, (such as photon electron collision), the total energy and total momentum are conserved. However, the number of photons may not be conserved in photon-particle collision. The photon may be absorbed or a new photon may be created.

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