AIIMS 2010 Physics Collisions MCQ Question
Whenever a stream of electrons collides with a stream of photons, in this collision, which of the following is not conserved?
Linear momentum
Total energy
No. of photons
No. of electrons
Correct Answer
Detailed Explanation
In a photon-particle collision (such as photon-electron), 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.
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