Assertion : A hollow metallic closed containe | vedclass

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Question

(C) hollow metallic container with a small hole acts as a black body because any radiation entering the hole undergoes multiple reflections inside and

Vedclass · Accepted Answer

If the $Assertion$ is correct but $Reason$ is incorrect.

Vedclass · Answer

(C) hollow metallic container with a small hole acts as a black body because any radiation entering the hole undergoes multiple reflections inside and is eventually absorbed. This is known as $Fery's$ black body. Thus,the $Assertion$ is correct.However,the $Reason$ states that all metals act as black bodies,which is false. Metals are generally good reflectors and poor absorbers of radiation. Therefore,the $Reason$ is incorrect.$	herefore$ The correct option is $C$.

$Assertion :$ $A$ hollow metallic closed container maintained at a uniform temperature can act as a source of black body radiation.
$Reason :$ All metals act as black bodies.

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$Assertion :$ $A$ hollow metallic closed container maintained at a uniform temperature can act as a source of black body radiation.$Reason :$ All metals act as black bodies.