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The maximum focal length of the eye lens...

The maximum focal length of the eye lens of a person is greater than its distance from the retina. The eye is

A

always strained in looking at an object

B

strained for objects at large distance only

C

strained fro objects at short distance only

D

unstrained for all distances

Text Solution

Verified by Experts

The correct Answer is:
A
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CP SINGH-OPTICAL INSTRUMENTS-EXERCISES
  1. The focal length of a normal eye lens is about

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

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

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  4. The human eye has a lens which has

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

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

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

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

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

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

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

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

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

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

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

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

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

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  18. How should people wearing spectacles work with a microscope

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

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

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