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The magnifying power of telescope is hig...

The magnifying power of telescope is high,if

A

both objective and eyepice have short focal lengths

B

both objective and eyepiece have long focal lengths

C

Objective has a long focal length

D

Objective has a hort focal length and eyepice has a long focal length.

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MODERN PUBLICATION-UNIT TEST -06-EXERCISE
  1. The ability of eye-lens to adjust its focal length is called……. .

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

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  3. The magnifying power of telescope is high,if

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

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

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  6. If size of aperture is decreased,

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

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

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  9. Huygens' wave theory allows us to know:

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

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

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  12. Hiygens' concept of secondary waves

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  13. In the ineterference pattern,the energy is

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

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  15. Two waves,whose inensitites re 9:16 are made to inrterefere.The ratio ...

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  16. Two waves have intenstities in the ratio of 1:9.If these waves produce...

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  17. When ligh wave suffers reflection at the interface between air and gla...

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  18. Two sources of light of wavelenghs 2.500 overset @A and 3,500 overst @...

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  19. In Yound's double slit experiment,wer get 15 fringes per cm on the scr...

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  20. If white light is used in the Newton's ring s experiment ,the color ob...

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