Which of the following is more close to a black body? (a) black board paint (b) green leaves (c) black holes (d) red roses

Answer: (a). A black body absorbs nearly all radiation falling on it. Lamp-black / black board paint absorbs about 96-99% of incident radiation; leaves and roses reflect a lot of light. So the answer is (a) black board paint.

Which of the following is more close to a black body? | JEE Main 2002 (AIEEE)

Q106JEE Main 2002 · AIEEEEasy

Thermal Radiation: Black Body, Stefan & Wien

Which of the following is more close to a black body?

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Answer: (a)

A black body absorbs nearly all radiation falling on it.
Lamp-black / black board paint absorbs about 96-99% of incident radiation; leaves and roses reflect a lot of light.
So the answer is (a) black board paint.

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