AA body radiates at all temperatures except $0 \,K$
B
A good reflector is a bad radiator
C
A colder body can radiate heat to the hotter surroundings
DA body does not radiate when its temperature is below $0^{\circ} C$
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DA body does not radiate when its temperature is below $0^{\circ} C$
d (d)
$0^{\circ} C$ is $273 \,K$ so a body will radiate.
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