JEE PHYSICS MCQ: THERMAL PROPERTIES OF MATTER

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Understanding +4 | -1

A polished metal plate with a rough black spot on it is heated to about

1400 \mathrm{~K}

and quickly taken into a dark room. Which one of the following statements will be true?

View answer and explanation

Correct option: A

The spot will appear brighter than the plate

Option A (The spot will appear brighter than the plate) is correct because according to Kirchhoff's law, good absorbers are good emitters, and the black spot is a good absorber.

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