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Question: Answered & Verified by Expert

Two identical objects A and B are at temperatures TA and TB  respectively. Both objects are placed in a room with perfectly absorbing walls maintained at a temperature T(TA>T>TB). The objects A and B attain the temperature T eventually. Select the correct statements from the following

PhysicsThermal Properties of MatterNEET
Options:
  • A A only emits radiations, while B only absorbs it until both attain the temperature T
  • B A loses more heat by radiation than it absorbs, while B absorbs more radiation than it emits until they attain the temperature T
  • C Both and B  only absorb radiation but do not emit it, until they attain the temperature T.
  • D B only emits radiations, while A only absorbs it until both attain the temperature T
Solution:
2158 Upvotes Verified Answer
The correct answer is: A loses more heat by radiation than it absorbs, while B absorbs more radiation than it emits until they attain the temperature T
Every object emits and absorbs the radiations simultaneously. If the energy emitted is more than the energy absorbed temperature falls and vice versa.

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