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Absorption co-efficient of an open windo...

Absorption co-efficient of an open window is...

A

zero

B

0.5

C

1

D

0.2

Text Solution

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The correct Answer is:
C
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TARGET PUBLICATION-KINETIC THEORY OF GASES AND RADIATION -Competitive thinking
  1. A gas is compressed isothermally to half its initial volume. The same ...

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  2. Which of the following statements is true?

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  3. Absorption co-efficient of an open window is...

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  4. Absorption coefficient of totally blackbody is

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  5. 0.4

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  6. Coefficient of transmission is 0.22 and coefficient of reflection is 0...

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  7. When 150 J of energy. is incident on surface of a body, 15 J of energy...

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  8. Heat energy is incident on the surface at the rate of 1000 J/min. If c...

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  9. Wien's law is

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  10. A black body radiates heat at temperatures T(1) and T(2) (T(2) gt T(1)...

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  11. On observing light from three different stars P, Q and R, it was found...

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  12. A piece of iron is heated in a flame. It first becomes dull red then b...

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  13. Behaviour of an ideal black body is similar to

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  14. The colour of a star depends upon its

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  15. Wein's constant is 2892xx10^(-6) MKS unit and the value of lambda(m) f...

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  16. The intensity of radiation emitted by the sun has its maximum value at...

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  17. A black body has maximum wavelength lambda(m) at temperature 2000 K. I...

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  18. A black body emits radiations of maximum intensity at a wavelength of ...

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  19. A black body is at a temperature of 5760 K. The energy of radiation em...

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  20. Three objects coloured black, gray and white can withstand hostile con...

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