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Answer the following questions : When a...

Answer the following questions :
When an object of height 3 cm is placed in front of a concave lens , the height of the image is found to be 6 cm. State , giving the reason , whether the given statement is true or false .

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Answer the following questions : When an object of height 2 cm is placed in front of a convex lens, the height of the image is found to be 3cm . State the nature and position of the image giving reason .

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Answer the following questions : An object is kept in front of a lens of focal length -20 cm . Describe the nature of the image when the object distance is 25 cm.

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Answer the following questions: When an object is kept at 50 cm in front of a concave mirror, Its real image is obtained at the same distance from the mirror. What is the focal length of the mirror?

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Answer the following questions: An object is placed at 45 cm in front of a concave mirror of focal length 30 cm. State the nature and size of the image relative to that of the object.

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NAVNEET PUBLICATION-LENSES-EXERCISE
  1. Answer the following questions : When an object of height 2 cm is pla...

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  2. Answer the following questions : You are given a lens which gives a v...

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  3. Answer the following questions : When an object of height 3 cm is pla...

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  4. Answer the following questions : State two uses of a concave lens.

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  5. Answer the following questions : State two uses of a convex lens.

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  6. Answer the following questions : An object is kept in front of a lens...

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  7. Answer the following questions : An object is placed in front of a co...

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  8. Answer the following questions : What is the power of a lens ?

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  9. Answer the following questions : What is the unit of power of a lens ...

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  10. Answer the following questions : What is the sign of the power of a...

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  11. Answer the following questions : If there is an increase or decrease ...

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  12. Answer the following questions : If two lenses of focal length f1 and...

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  13. Answer the following questions : Draw a neat labelled diagram to show...

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  14. Answer the following questions : What is cornea ?

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  15. Answer the following questions : What is iris ?

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  16. Answer the following questions : What is pupil ?

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  17. Answer the following questions : What is the use of the pupil in the ...

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  18. Answer the following questions : With reference to the functioning of...

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  19. Answer the following questions : What is the shape and the size of th...

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  20. Answer the following questions : Name the part of the human eye that ...

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