JEE · NEET Previous Year Question
Which of the following is the example of ideal black body
Topic: NEET PYQ
Answer: C. Full step-by-step solution below.
- AKajal
- BBlack board
- CA pin hole in a box
- DNone of these
Correct answer: C
Solution
(c) When light incident on pin hole, enters into the box and suffers successive reflection at the inner wall. At each reflection some energy is absorbed. Hence the ray once it enters the box can never come out and pin hole acts like a perfect black body.More Heat Transfer PYQs
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