MHT CET Physics question

An ideal black body at room temperature is thrown into a furnace. It is observed that,

(A)it is the darkest body at all times
(B)it cannot be distinguished at all times
(C)initially it is the darkest body and later it becomes brightest
(D)initially it is the darkest body and later it cannot be distinguishedCorrect

Answer: (D)

Solution

At room temperature the black body absorbs all radiation falling on it and emits little, so it is darkest at first; after it reaches the furnace temperature it radiates exactly as much as

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Question ID VK-063707