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Ratio of rate of radiation of heat of bo...

Ratio of rate of radiation of heat of body at `227^(@)C` to that of the same body at `27^(@)C` is

A

`3.25:9`

B

`27:125`

C

`5:3`

D

`625:81`

Text Solution

Verified by Experts

The correct Answer is:
D
`(R_(2))/(R_(1))=(T_(2)^(4))/(T_(1)^(4))=(625)/(81)`
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NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Stefans Law of Black Body Radiation)
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  2. A solid sphere cools at the rate of 2.8^(@)C per minute, when its temp...

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  3. Ratio of rate of radiation of heat of body at 227^(@)C to that of the ...

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  4. The ratio of the rate of radiation of heat by a perfectly black body a...

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  5. A body radiates heat at the rate of 50 J/s at 300 K. when the same bod...

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  6. The rate of emission of heat energy of an iron ball of radius 5 cm is ...

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  7. A cube, which may be regarded as a perfectly black body, radiates heat...

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  8. The amount of thermal radiations emitted from one square metre area of...

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  9. A black body radiates 3 J/cm^(2) s when its temperature is 127^(@)C. H...

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  10. The rate of loss of heat by radiation frombody at 400^(@)C is R. then ...

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  11. A ball is coated with lamp black. Its temperature is 327^(@)C and is p...

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  12. A black body at a temperature of 227^(@)C radiates heat energy at the ...

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  13. The temperature of a body is increased by 50%. The amount of radiation...

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  14. Two solid spheres of radii R(1) and R(2) are made of the same material...

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  15. Two spheres P and Q of the same colour and having radii 4 cm and 2 cm ...

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  16. A black body at a temperature of 127^(@)C radiates heat at the rate of...

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  17. The ratio of loss of heat from a metal sphere at 327^(@)C to that of t...

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

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  19. A body radiates heat at the rate of 50 J/s at 300 K. when the same bod...

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  20. If the temperature of a hot body is raised would increased by

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