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Fill ups ……………is corrected by convex len...

Fill ups
……………is corrected by convex lens.

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Fill ups The region represented by the inequalities xge6, yge2, 2x+yge10 , is convex and…………. .

What is minimum distance between an object and the real image formed by a convex lens?

Fill ups: …………..is the degree of electrification.

A concave lens is kept in contact with convex lens of focal length 20 cm.The combination works as convex lens of focal length 50 cm. Find the power of concave lens.

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MODERN PUBLICATION-THE HUMAN EYE AND THE COLOURFUL WORLD-EXERCISE
  1. The intensity of light entering the eye is controlled by

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

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  3. Fill ups ……………is corrected by convex lens.

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  4. Fill ups Blue colour of the sky is due to the …………………of light.

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  5. Fill ups The frequency of…………….colour of light is maximum and………….is m...

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  6. When you enter a cinema hall, you are unable to see the persons sittin...

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  7. After watching a shown of 12-3 pm when you come out of the cinema hall...

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  8. The major convergence of rays reaching the eyes is done by

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  9. Myopia is corrected by

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  10. Hypermetropia is corrected by

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

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  12. A prism splits a beam of white ligth into its seven constituent colour...

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  13. Twinkling of stars is due to atmospheric:

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  14. Ciliary muslces can change the focal length of eye lens. This phenomen...

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  15. True or False : A sensory nerve conducts nerve impulses from brain to...

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  16. A student has difficulty in reading the blackboard while sitting in th...

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  17. Write in one word or at most one sentence about the following Mirrors ...

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  18. Write in one word or at most one sentence about the following The smal...

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  19. The far point of a myopic person is 80 cm. In front of the eye. What i...

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  20. Why are dnger signals red in colour?Give reason.

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