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Answer the question based on the followi...

Answer the question based on the following diagrams:

Give two reason for this defect

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CHETANA PUBLICATION-LENSES-Exercise
  1. Explain the following with the help of a diagram: Explain the worki...

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  2. Answer the question based on the following diagrams: Name the defect...

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  3. Answer the question based on the following diagrams: Give two reason...

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  4. Answer the question based on the following diagrams: In which figure...

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  5. Selwyn is 16 yr old and wears a spectacle having a power of +2 D .Answ...

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  6. Vijay is 16 yr old and wears a spectacle having a power of -2 D .Answe...

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  7. Ankit developed an eye defect at the age of 65 yrs and had to wear a l...

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  8. What changes in the position of the candle should be made to obtain a ...

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  9. What is nature of image formed if a concave lens is used instead of a ...

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  10. State any one point of difference between a real and virtual image.

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  11. Label A and B in the diagram.

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  12. Explain the functions of A.

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  13. Name the two lenses A and B

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  14. Farsightedness can be corrected by using lens. A. Convex B. concave ...

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  15. The perception of dim light is concerned with cells. A. rod B. cone ...

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  16. Find the odd word out: Long-sightedness, myopia, short sightedness, ne...

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  17. Object at 2F1: image at 2F2:: object at F1:.

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  18. State whether the following statement are 'True' of False". If false w...

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  19. An object is placed at a distance of 15 cm from a convex lens.If the f...

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  20. Give scientific reasons: We cannot clearly see an object kept at a...

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