JEE · NEET Previous Year Question
An ideal black body at room temperature is thrown into a furnace. It is observed that
Topic: NEET PYQ
Answer: A. Full step-by-step solution below.
- AInitially it is the darkest body and at later times the brightest
- BIt is the darkest body at all times
- CIt cannot be distinguished at all times
- DInitially it is the darkest body and at later times it cannot be distinguished
Correct answer: A
Solution
(a) Initially black body absorbs all the radiant energy incident on it, So it is the darkest one. Black body radiates maximum energy if all other condition are same. So when the temperature of the black body becomes equal to the temperature of furnace it will be brightest of all.More Heat Transfer PYQs
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