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

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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If Assertion is incorrect but Reason is correct

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Solution

The correct option is C Assertion is correct but Reason is incorrect
A blackbody refers to an opaque object that emits thermal radiation. A perfect blackbody is one that absorbs all incoming light and does not reflect any. At room temperature, such an object would appear to be perfectly black. A hollow metallic closed container maintained at a uniform temperature can act as a source of a black body radiation because it will absorb all incoming light, but won't emit any out of it. However not all metals will act as a black body.

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