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QPage 363: Q5: HC Verma: Concepts of Physics - Volume 2 Photoelectric Effect and Wave-Particle Duality Page 363: Q5 Solution: A hot body is placed in a closed room maintained at a lower…

A hot body is placed in a closed room maintained at a lower temperature. Is the number of photons in the room increasing?

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**Answer:** Yes, the number of photons in the room is increasing. **Step-by-Step Explanation:** The hot body radiates heat in the form of photons. As the body is in a closed room maintained at a lower temperature, there will be a net transfer of heat (and hence photons) from the hot body to the room. Therefore, the number of photons in the room will increase.

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