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Which one of the following statements is...

Which one of the following statements is true in the case of radiation emitted by a human body ?

A

It is emitted only during the day

B

It lies in the infrared region

C

It lies in the ultraviolet region and hence it is invisible

D

It is emitted during the summer and absorbed during the winter

Text Solution

Verified by Experts

The correct Answer is:
B
The radiation emitted by a human body lies in the infrared region (thermal radiations).
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MARVEL PUBLICATION-KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION-TEST YOUR GRASP - 9
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  2. Which one of the following is not true about the following thermodynam...

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  3. During an adiabatic process, the pressure of gas is found to be propor...

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  4. The difference between the principal specific heats of a gas is 300J/k...

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  5. When the temperature of 4 moles of a gas was increased from 80^(@)C to...

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  6. 100g of water is heated from 30^@C to 50^@C. Ignoring the slight expan...

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  7. The temperature of sink of Carnot engine is 27^(@)C. Efficiency of eng...

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  8. In an ideal refrigerator, heat from inside at 280 K is transferred to ...

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  9. Which one of the following statements is true in the case of radiation...

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  10. A perfectly black sphere of diameter 0.2 m is in thermal equilibrium w...

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  11. The radiation emitted by a star A is 100 times that of the sun. If the...

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  12. Three black bodies A, B and C in the form of cubes of sides in the rat...

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  13. The rate of dissipation of heat by a black body at temperature T is Q....

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  14. A body is heated to a temperature of 75^(@)C and is allowed to cool. I...

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  15. A body cools from 50^(@)C to 46^(@)C in 5 minutes and to 40^(@)C in th...

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  16. The maximum wavelength of radiation emitted from the sun at 6000 K is ...

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  17. The temperature of a black body is gradually increased. The colour of ...

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  18. The wavelength of maximum energy released during an atomic axplosion w...

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  19. Which rays are responsible for green house effect ?

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  20. An ideal monoatomic gas is taken round the cycle ABCDA as shown in the...

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