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The energy supply being cut-off, an elec...

The energy supply being cut-off, an electric heater element cools down to the temperature of its surrounding, but it will not cool further because

A

Supply is cut off

B

It is made of metal

C

Surroundings are radiating

D

Element & surroundings have same temp.

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The correct Answer is:
D
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ERRORLESS -TRANSMISSION OF HEAT-Radiation (General, Kirchoff s law, Black body)
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