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Mark the correct options (i) If the fa...

Mark the correct options
(i) If the far point goes ahead, the power of the divergent lens should be reduced
(ii) If the near point goes ahead, the power of the convergent lens should be reduced
(iii) If the far point is `1m` away from the eye, divergent lens should be used
(iv) If the near point is `1m` away from the eye, divergent lens should be used

A

`(i),(ii)`

B

`(i),(iii)`

C

`(ii),(iv)`

D

`(i),(iv)`

Text Solution

Verified by Experts

The correct Answer is:
B
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CP SINGH-OPTICAL INSTRUMENTS-EXERCISES
  1. An astronaut is looking down on earth's surface from a space shuttle a...

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  2. 1. Identify the wrong description of the above figures

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  3. Mark the correct options (i) If the far point goes ahead, the power ...

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  4. In the case of hypermetropia (i) the image of a near object is forme...

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  5. Astigmatism for a human eye can be removed by using

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  6. A man, wearing glasses of power +2D can read clearly a book placed at ...

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  7. A person whose far-point is at 30cm wants to read at 50cm. The power o...

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  8. A person wears glasses of power -2.5D. The defect of the eye and the f...

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  9. A far-sighted man can see clearly at a distance of 1.0m. The power of ...

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  10. The near point of a person is 50 cm and the far point is 1.5m. The spe...

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  11. An eye specialist prescribes spectacles having combination of convex l...

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  12. How should people wearing spectacles work with a microscope

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  13. Chromatic aberrations in the formation of image by a lens arise becaus...

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  14. Which of the following quantities related to a lens depend on the wave...

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  15. Let f(v) and f(r) are the focal lengths of a convex lens for violet an...

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  16. An achromaic convergent system of focal length +20cm is made of two le...

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  17. A combination of two thin lenses of the same material with focal lengt...

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  18. The dispersive powers of crown and flint glasses are 0.02 and 0.04 res...

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  19. The dispersive power of the material of lens of focal length 20cm is 0...

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  20. Spherical aberration in a thin lens can be reduced by

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