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Heat — Science STD 7 — Question

Gujarat BoardEnglish MediumSTD 7ScienceHeat1 Mark
MCQ
When a body has the same temperature as that of its surroundings :
  • A
    It does not radiate heat
  • ✓
    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.
✓

Answer

Correct option: B.
It radiates same quantity of heat as it receives from the surroundings
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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