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In the pervious quenstion, if the tube l...

In the pervious quenstion, if the tube length is increased slightly from its position of normal adjustement,

A

a virtual image of `S` will be formed at a finite distance

B

no image will be formed

C

a small, real image of `S` will be formed behind the eye-piece, closer to it

D

a large, real image of `S` will be formed behind the eye-piece, far away from it

Text Solution

Verified by Experts

The correct Answer is:
D
When `Llt(f_(0)+f_(e))`, image by objective will be such that
`|u_(e)|` is slightly greater than `f_(e)`, real image, large image will be formed.
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CP SINGH-OPTICAL INSTRUMENTS-EXERCISES
  1. In an astronomical telescope in normal adjustment a straight black lin...

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  2. An astronomical telescope in normal adjustement receives light from a ...

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  3. In the pervious quenstion, if the tube length is increased slightly fr...

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

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

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

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

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  8. For a telescope to have large resolving power the

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

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

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

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

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

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

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  15. Choose the correct option:

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

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

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

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  19. The human eye has a lens which has

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

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