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The cause of Fraunhoffer lines is...

The cause of Fraunhoffer lines is

A

reflection of radiation by chromosphere

B

absorption of radiation by chromosphere

C

emission of radiation by chromosomes

D

transmission of radiation by chromosomes

Text Solution

Verified by Experts

The correct Answer is:
B
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NIKITA PUBLICATION-KINETIC THEORY OF GASES & RADIATION -MCQs (Spectrum of Black Body Radiations in Terms Wavelength)
  1. When the temperature of black body rises, then the wavelength correspo...

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  2. If the temperature of a black body is increased then the wavelength co...

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  3. The cause of Fraunhoffer lines is

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  4. Wien's distribution law fails at

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  5. Which of the following can be used to estimate the temperature of a st...

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  6. If the wavelength corresponding to maximum energy radiated from the mo...

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  7. A spherical body of 5 cm radius is maintained at a temperature of 327^...

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  8. Two stars A and B radiates maximum energy at 3600 Å and 4200 Å, respec...

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  9. The maximum radiant energyy emitted at 1000 K is for a wavelength of 2...

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  10. The surface temperature of the sun is about 6000 K. the sun's radiatio...

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  11. If wavelengths of maximum intensity of radiations emitted by the sun a...

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  12. The wavelength of maximum emitted energy of a body at 700 K is 4.08 mu...

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  13. A black body at 200 K is found to exit maximum energy at a wavelength ...

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  14. Two stars emit maximum radiation at wavelength 3600 Å and 4800 Å respe...

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

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  16. Black body at a temperature of 1640K has the wavelength corresponding ...

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  17. Solar radiation emitted by sun resembles that emitted by a body at a t...

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  18. What will be the ratio of temperatures of sun and moon if the waveleng...

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  19. The absolute temperatures of two black bodies are 2000 K and 3000 K re...

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  20. A particular star (assuming it as a black body) has a surface temperat...

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