There is a rough black spot on a polished metallic plate. It is heated upto 1400 K approximately and then at once taken in a dark room. Which of the following statements is true

Options

A. In comparison with the plate, the spot will shine more
B. In comparison with the plate, the spot will appear more black
C. The spot and the plate will be equally bright
D. The plate and the black spot can not be seen in the dark room

Answer

A

Explanation

On heating the black spot absorbs radiations and hence emits them in the dark room while the polished shining part absorbs nothing but reflects radiations.