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A hot body will radiate maximum energy i...

A hot body will radiate maximum energy if its surface is

A

White & polished

B

White & rough

C

Black & polished

D

Black & rough

Text Solution

Verified by Experts

The correct Answer is:
D
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MOTION-HEAT - 1-EXERCISE -2 (Level - I) Objective Problems | JEE Main
  1. If specific heat of a substance is infinite, it means

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  2. A lake surface is exposed to an atmosphere where the temperature is lt...

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  3. One end of a 2.35m long and 2.0cm radius aluminium rod (K=235W.m^(-1)K...

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  4. Two sheets of thickness d and 2d and same area are touching each other...

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  5. A bucket full of hot water cools from 75^(@)C to 70^(@)C in time T(1),...

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  6. An object is cooled from 75^(@)C to 65^(@)C in 2 min in a room at 30^(...

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  7. Two thermometers A and B are exposed in sunlight. The bulb of A is pai...

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  8. Which of the following law states that "good absorbers of heat are goo...

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  9. A hot body will radiate maximum energy if its surface is

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  10. There is a black spot on a body. If the body is heated and carried in ...

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  11. We consider the radiation emitted by the human body. Which of the foll...

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  12. Half part of ice block is covered with black cloth and rest half is co...

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  13. If 'p' calorie of heat energy is incident on a body and absorbs 'q' ca...

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  14. If same amount of ice in placed in black and white cloth then ice in b...

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  15. A black body emits radiations of maximum intensity at a wavelength of ...

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  16. The radiant energy from the Sun incident normally at the surface of ea...

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  17. The spectral emissive power E(lambda) for a body at temperature T(1) i...

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  18. Hot coffee is to be taken after 10 minutes it is put into a cup. To ob...

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  19. When placed in air at 30^(@)C, the temperature of a body decreases fro...

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  20. A sphere, a cube and a thin circular plate, all of same material and s...

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