MHT CET Physics question

An ideal black body at room temperature is thrown in to a furnace it is observed that:

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

Answer: (A)

Solution

At room temperature the black body emits very little visible light, so against the glowing furnace it looks darkest; as it absorbs heat and its temperature rises it emits more and more strongly and eventually

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Question ID VK-062996