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Nature of thermal radiations is similar ...

Nature of thermal radiations is similar to the nature of -

A

electro magnetic waves

B

gravity waves

C

`beta`rays

D

sound waves

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The correct Answer is:
A
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MOTION-HEAT TRANSFER & THERMAL EXPANSION -EXERCISE - 1
  1. One end of a 2.35m long and 2.0cm radius aluminium rod (K=235W.m^(-1)K...

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  2. A metallic rod is continuously heated at its two ends, the flow of hea...

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  3. Nature of thermal radiations is similar to the nature of -

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  4. Heat radiation exhibit the phenomenon of polarization which means that...

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  5. If transmission power of a surface is 1/6 and reflective power is 1/3,...

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  6. Out of the radiations falling on surface of a body, 30% radiations are...

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  7. If same amount of ice in placed in black and white cloth then ice in b...

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  8. The temperature of a black body becomes half of its original temperatu...

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  9. The MKS unit of Stefan's constant is

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  10. Two bodies A and B are kept in an evacuated chamber at 27^@C. The temp...

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

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  12. Four bodies of specific heats s1,s2,s3 and s4 are cooled in the same s...

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  13. The effective area of a black body is 0.1 m^2 and its temperature is 1...

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  14. Radius of a shere is R density is d and specific heat is s, Is is heat...

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  15. If a body at 27^(@)C emits 0.3 watt of heat then at 627^(@)C, it will ...

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  16. The rate of cooling of a body depends on –

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  17. A solid sphere, a cube and a plate, all are made of same material and ...

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  18. Consider two hot bodies B(1) and B(2) which have temperature 100^(@)"C...

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  19. According to Newton’s law of cooling ms (d theta)/(dt)=-K(theta-theta0...

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  20. is temperature of surroundings in K, then the value of K on the basis ...

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