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Is there any limit to change of focal le...

Is there any limit to change of focal length of eye lens ?

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Yes, when the object is at infinity, the parallel rays from the object falling on the eye lens are refracted. They form a point-sized image on retina. In this situation, eye lens has a maximum focal length.
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VGS PUBLICATION-BRILLIANT-HUMAN EYE AND COLOURFUL WORLD-QUESTIONS GIVEN IN THE LESSON (1 MARK QUESTIONS)
  1. How does this change (eye lens changes its focal lengths) take place i...

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  2. Does eye lens form a real image or virtual image ?

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  3. Is there any limit to change of focal length of eye lens ?

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

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  5. What happens if eye lens is not able to adjust its focal length ?

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  6. What happens if the focal length of eye lens is beyond the range of 2...

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  7. What can we do to correct myopia ?

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  8. What happens when the eye has a minimum focal length greater than 2.27...

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  9. Have you ever observed details in the prescription ?

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  10. You might have heard people saying "my sight is increased or decreased...

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  11. What do you mean by power of lens ?

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  12. How could the white light of the sun gives us various colours of the r...

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  13. What happens to a light ray when it passes through a transparent mediu...

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  14. What is a prism ?

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  15. What is the shape of the outline drawn for a prism ?

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  16. How do you find angle of deviation ?

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  17. What do you notice from the angle of deviation ?

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  18. Can you draw a graph between angle of incidence and angle of deviation...

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  19. Is there any relation between the angle of incidence (i) and angle fo...

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  20. In an activity-3, we noticed that light has choseb different paths. Do...

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