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A ferfectly black body is one which abso...

A ferfectly black body is one which absorbs radiation of

A

all wavelengths

B

large wavelengths

C

small wavelengths

D

infrared wavelengths

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The correct Answer is:
A
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NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Perfectly black body, emmissive power and emmissivity)
  1. A man with a dark skin, in comparison with a man with a white skin, wi...

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  2. If the temperature of a perfectly black-body increases two times then ...

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  3. A ferfectly black body is one which absorbs radiation of

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  4. Reflectance of a perfectly black body is

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  5. Good absorbers of heat are

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  6. The maximum energy emitted per unit time per unit area by a body for a...

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  7. Coffee cools faster in saucer than in cup because of

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  8. The ratio of spectral emissive power of a body lamda and temperature T...

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  9. The spectrum from a black body radiation is a

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  10. A perfectly black body in one whose emissivity is

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  11. The emissive power of a surface depends upon

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  12. A perfectly white body

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  13. The amount of heat energy radiated per second by a surface depends upo...

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  14. S.I unit of emissive power is

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  15. Below a list of four types of surfaces

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  16. The silver polishing the walls of a thermos bottle minimizes the trans...

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  17. The bulbs of two identical thermometers are coated one with lamp black...

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  18. By which of the following methods could a cup of hot tea loss heat whe...

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  19. A black body at high temperature emits thermal radiations of

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  20. A sphere, a cube and a thin circular plate, all having the same mass a...

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