Question

Assertion :In photon-particle collision the total energy and total momentum are conserved.
Reason: The number of photons are conserved in a collision

• A. If both assertion and reason are true and reason is the correct explanation of assertion
• B. If both assertion and reason are true but reason is not the correct explanation of assertion
• C. If assertion is true but reason is false
• D. If both assertion and reason are false

Answer 1

Answer: (C)

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