A piece of blue glass heated to a high temperature and a piece of red glass at room temperature, are taken inside a dimly lit room then

Options

A. The blue piece will look blue and red will look as usual
B. Red look brighter red and blue look ordinary blue
C. Blue shines like brighter red compared to the red piece
D. Both the pieces will look equally red

Answer

C

Explanation

At high temperature blue glass absorbs all the radiations of higher wavelength except blue
In a dark room, It emits all the radiations of higher wavelength hence it looks brighter red as compare to the red piece.