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Which of the following is true statement...

Which of the following is true statement?

A

A good absorber is bad conductor

B

Each body emits and absorb radiation at each temperature

C

In a black body energy of emitted radiation is equal for all wavelength

D

Plank's law gives between maximum wavelength of black body radiation and its temperature

Text Solution

Verified by Experts

The correct Answer is:
B
According to Kirchoff, each body emits and absorbs radiation at every temperature.
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RESONANCE ENGLISH-HEAT TRANSFER-Exercise
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  2. Consider a composite slab consisting of two different materials having...

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  3. A square is made of four rods of same material one of the diagonal of ...

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  4. If the temperature difference on the two sides of a wall increases fro...

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  5. The colour of a star indicates its

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  6. The means of energy transfer in vacuum is:

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  7. Which of the following is nearest to blackbody-

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  8. Which of the following is true statement?

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  9. For a black body at temperature 727^(@)C. If the temperature of the bl...

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  10. According to Wien's law

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  11. If lambda(m) denotes the wavelength at which the radiative emission fr...

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  12. A black body at 1227^(@)C emits radiations with maximum intensity at a...

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  13. The energy radiated by a black body is directly proportional to :

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  14. If temperature becomes double, the emitted radiation will be :

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  15. Prevost's theory of heat exchange tells that a body radiates thermal e...

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  16. Reflection and absorption coefficient of a given surface at 0^@C for a...

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  17. A black metal foil is warmed by radiation from a small sphere at tempe...

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  18. A body takes 10 min to cool douwn from 62^@C to 50^@C. If the temperat...

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  19. Two circular disc A and B with equal radii are blackened. They are hea...

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  20. According to Newton’s law of cooling, the rate of cooling of a body is...

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