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A piece of charcoal and a piece of shini...

A piece of charcoal and a piece of shining steel of the same surface area are kept for a long time in an open lawn in bright sun.

A

(i), (iii)

B

(ii), (iii)

C

(iii), (iv)

D

(i), (ii)

Text Solution

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The correct Answer is:
C
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CP SINGH-HEAT TRANSFER-Exercises
  1. Two bodies A and B having equal surface areas are maintained at temper...

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  2. Two spheres of radii in the ratio 1 : 2 and densities in the ratio 2 :...

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  3. A piece of charcoal and a piece of shining steel of the same surface a...

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  4. In a dark room with ambient temperature T(0), a black body is kept at ...

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  5. Three very large plates of same area are kept parrallel and close to e...

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  6. A solid at temperature T(1) is kept in an evacuated chamber at tempera...

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  7. A system S receives heat continuously from an electric heater of power...

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  8. A spherical black body of radius r radiates power P, and its rate of c...

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  9. The temperature of an isolated black body falls from T(1) to T(2) in t...

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  10. A solid cube and a solid sphere of the same material have equal surfac...

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  11. A solide sphere and a hollow sphere of the same material and of equal ...

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  12. A sphere at temperature 600 K is placed in an enviroment to temperatur...

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  13. Two metallic spheres S1 and S2 are made of the same material and have ...

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

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  15. If the temperature of the sun were to increase form T to 2T and its ra...

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  16. If the radius of a star is R and it acts as a black body, what would b...

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

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  18. Assuming the sun to have a spherical outer surface of radius r radiati...

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  19. Assuming the Sun to be a spherical body of radius R at a temperature o...

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  20. The sun radiates energy in all directions. The average radiations rece...

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