A polished metal plate has a rough and black-spot. It is heated to 1400 K and brought immediately in dark room. Then

Options

(a) The spot will appear darker than the plate
(b) The spot will appear brighter than the plate
(c) The spot and plate will appear equally bright
(d) The spot will appear darker and brighter than the plate periodically

Correct Answer:

The spot will appear brighter than the plate

Explanation:

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