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If red light and violet light rays are o...

If red light and violet light rays are of focal length `f_r` adn `f_v` then which one of the following is true?

A

`lambda_r lt lamda_v`

B

`lambda_r=lambda_v`

C

`mu_rgtmu_v`

D

`mu_rltmu_v`.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. C.V. Raman received Nobel Prize for the discovery of the following phe...

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  2. The formation of rainbow in due to the phenomenon of

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  3. If red light and violet light rays are of focal length fr adn fv then ...

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  4. A parallel beam of white ligth falls on a convex lens .Images of blue...

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  5. The dispersive powers of the materials of the two lenses are in the r...

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  6. Retina of eye corresponds to which part of camera?

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  7. The ability of eye-lens to adjust its focal length is called……. .

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  8. An astronomical telescope of ten fold angular magnification has a leng...

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  9. The magnifying power of telescope is high,if

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  10. To increse magnifying power of telescope,we sould increase:

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  11. A telescope has focal elngth of objective and eyepiece as 200 cm and 5...

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  12. If size of aperture is decreased,

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  13. The objective with large aperture are used in telescope for

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  14. If in Rmsden's eyepiece,the field lenses have focal lengths f1 and f2 ...

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  15. Huygens' wave theory allows us to know:

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  16. Which of the following does not support the wave nature of light?

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  17. Huygen's wave theory of light could not explain

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  18. Hiygens' concept of secondary waves

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  19. In the ineterference pattern,the energy is

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  20. Two waves of the same equency and intenisty superimpose with each othe...

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