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The sky appears blue, because....

The sky appears blue, because.

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each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and each question constain STATEMENT-1(Assertion ) and STATEMENT - 2 (reason). examine the statement carefully and work the correct answer accoridng to the instructions given below : STATEMENT-1: Sky appears blue in colour. STATEMENT-2: Colloidal particles of dust along with water suspended in air scatter blue light.

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MODERN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-EXERCISE
  1. Presbyopia is corrected by concave lens. (True/False)

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

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  3. The sky appears blue, because.

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

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  5. Twinkling of stars is due to atmospheric:

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

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

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

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

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

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

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

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

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

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

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

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

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

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  19. The intensity of light entering the eye is controlled by

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  20. Fill ups Hypermetropia is corrected by ………….lens.

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