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Presbyopia is corrected by concave lens....

Presbyopia is corrected by concave lens. (True/False)

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MODERN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-EXERCISE
  1. Name the pehnomenon responsible for advanced sunrise and delayed sun-s...

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  2. The sun appears red at sun rise or sunset, why?

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  3. Presbyopia is corrected by concave lens. (True/False)

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  4. The power of lens used to correct myopia is positive. (True/False)

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  5. The sky appears blue, because.

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  6. Clouds look white because water droplets of clouds scatter all colours...

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  7. Twinkling of stars is due to atmospheric:

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  8. The sun is visible two minutes before sunrise and about two minutes su...

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  9. Planets twinkle on account of atmospheric refraction. (True/False)

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  10. What is the far point and near point of human eye with normal vision?

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  11. Fill ups The ability of the eye lens to adjust its focal length is cal...

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  12. In human eye,image of an object is formed at …… .

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  13. The least distance of distnct vision is ………… .

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  14. Fill ups The defect of the eye due to which distant objects cannot be ...

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  15. Fill ups The defect of the eye due to which nearby objects cannot be s...

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  16. Fill ups A person suffering from myopia and hypermetropia uses……………len...

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  17. Fill ups Old age hypermetropia is called……………. .

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  18. The phenomenon of splitting of white light into its constituent colour...

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  19. Fill ups The wavelength of………………colour of light is maximum and…………….co...

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  20. Name the phenomenon of absorption of light and then re-radiating it in...

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