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For a eye lens, which quantity is fixed...

For a eye lens, which quantity is fixed ?

A

Object distance

B

image distance

C

forcal length

D

above all

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Verified by Experts

The correct Answer is:
B
image distance
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The eye lens is

How does eye lens change its focal length ?

Consider the following statements : a) For a normal eye, the far point isat infinity. b) Focal length of eye lens is fixed. c) The change in focal length of eye lens to focus image at varying distance is done by the action of pupil . Which of the these statement (s) / are correct ?

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VGS PUBLICATION-BRILLIANT-HUMAN EYE AND COLOURFUL WORLD-CREATIVE QUESTIONS FOR NEW MODEL EXAMINATION (SECTION-I) (1/2 MARKS QUESTIONS)
  1. Which part is called as "variable aperture" in our eye ?

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  2. What is the distance between the lens and retina of eye ?

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  3. For a eye lens, which quantity is fixed ?

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  4. Which one helps to change the radii of curvature of the eye lens ?

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  5. To which part of the eye, ciliary muscles are attached ?

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  6. The eye lens is

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  7. Arrange the parts in one order from the front of the eye. Lens, aqu...

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  8. How do ciliary muscles respond, when the eye is focussed on a distant ...

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  9. If the ciliary muscles are strained, what would be the position of the...

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  10. What is the name of the process of adjusting focal length of eye lens ...

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  11. What type of image is formed by eye lens ?

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  12. Where is rods cones are located in our eye ?

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  13. Which receptors identify the colour ?

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  14. Which receptors identify the intensity of light?

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  15. Which part carries the light signals from retina to brain ?

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  16. How many number of receptors are there in retina ?

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  17. What are the maximum and munimum focal lengths of the eye lens ?

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  18. Match it {:("a)" f("max") "of eye lens","i) object is at 25 cm"),("b...

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  19. From the above figure, where is the object ?

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  20. From the given figure, what is the focal length of eye lens ?

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