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The process in which rate of transfer of...

The process in which rate of transfer of heat maximum is .

A

convection

B

convection

C

radiation

D

in all these heat is transferred with the same speed

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The correct Answer is:
C
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NARAYNA-TRANSMISSION OF HEAT-C .U .Q
  1. For a perfect insulator coefficient of thermal conductivity is .

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  2. Why is it hotter at the same distance over the top of a fire than in f...

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  3. The process in which rate of transfer of heat maximum is .

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

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  5. The thermal radiations are similar to .

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  6. The temperature at which a black body ceases to radiate energy is .

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  7. The intensity of energy radiated by a hot body at distance r from it v...

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  8. When a body has the same temperature as that of its surroundings

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  9. One healf of a slab of ice is covered with black cloth and the other h...

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  10. Compared to a person with white skin another person with dark skin wil...

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  11. Which of the following statements is wrong ?

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  12. The physical factor distinguishes thermal radiation from visible light...

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  13. If we place our hand below a lighted electric bulb We feel warmer beca...

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  14. Heating effect of the incoming solar radiation is maximum at local noo...

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  15. The absorptivity of Lamp black and platinum black is .

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  16. Absorptive power of a white body and of a perfectly black body respect...

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  17. Three bodies A,B,C are at -27^(@)C, 0^(@)C, 100^(@)C respectively The ...

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  18. At high temperature black body spectrum is .

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  19. A black body emits

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  20. The best laboratory approximation to an ideal black body is .

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