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Question

When a body has the same temperature as that of its surroundings :
  1. It does not radiate heat
  2. It radiates same quantity of heat as it receives from the surroundings
  3. It radiates less quantity of heat as it receives from the surroundings
  4. It radiates more quantity of heat as it receives from the surroundings.

A
It does not radiate heat
B
It radiates same quantity of heat as it receives from the surroundings
C
It radiates less quantity of heat as it receives from the surroundings
D
It radiates more quantity of heat as it receives from the surroundings.
Solution
Verified by Toppr

Since the body has the same temperature as that of surrounding, it is in thermal equilibrium with the surroundings.
So, there is no net exchange of heat.
So, amount of heat radiated = amount of heat received from the surroundings.

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