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If the focal length of the objective len...

If the focal length of the objective lens is increased then

A

magnifying power of microscope will increase but that of telescope will decrease

B

magnifying power of microscope and telescope both will increase

C

magnifying power of microscope and telescope both will decrease

D

magnifying power of microscope will decrease but that of telescope will increase

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The correct Answer is:
D
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CP SINGH-OPTICAL INSTRUMENTS-EXERCISES
  1. In the pervious quenstion, if the tube length is increased slightly fr...

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  2. In a reflecting astronomical telescope, if the objetcive (a spherical ...

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  3. If the focal length of the objective lens is increased then

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  4. For observing cricket math a binocular is preferred to a terrestrial t...

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  5. In which of the following that final image is erect? (i) Simple mic...

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  6. For a telescope to have large resolving power the

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  7. Wavelength of light used in an optical instrument are lambda(1) = 4000...

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  8. Two points separated by a distance of 0.1mm can just be resolved in a ...

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  9. The resolving power of an astronomical telescope is 0.2 seconds. If th...

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  10. The angular resolution of a 10cm diameter telescope at a wavelength 50...

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  11. The resolving power of acompound microscope can be increased if we

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  12. How can we increase the resolving power of a microscope ?

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  13. Choose the correct option:

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  14. The focal length of a normal eye lens is about

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  15. When we see an object, image formed on the retina is (i) real (ii) v...

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  16. The maximum focal length of the eye lens of a person is greater than i...

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  17. The human eye has a lens which has

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  18. The resolving limit of eye is 1min. At a distance of x km from the eye...

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  19. Two point white dots are 1mm apart on a black paper. They are viewed b...

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  20. An astronaut is looking down on earth's surface from a space shuttle a...

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