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What are real and virtual images ? How w...

What are real and virtual images ? How will you find out whether an image is real or virtual ? Can a virtual image be obtained on a screen ?

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NAVNEET PUBLICATION-LENSES-EXERCISE
  1. What are real and virtual images ? How will you find out whether an im...

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  2. Fill in the blanks : The focal length of a ………… lens is positive.

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  3. Fill in the blanks : The focal length of a ………… lens is negative.

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  4. Fill in the blanks : The magnification produced by a ……….. lens is a...

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  5. Fill in the blanks : The power of a ………….. lens is positive.

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  6. Fill in the blanks : The power of a ………….. lens is negative.

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  7. Fill in the blanks : The focal length of a lens with power 2.5 D is ...

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  8. Fill in the blanks : The power of a lens with focal length 20 cm is ...

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  9. Fill in the blanks : The minimum distance of distinct vision for a n...

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  10. Fill in the blanks : If two lenses with focal lengths 10cm and 20 cm...

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  11. Fill in the blanks : A …………… lens is used as a simple microscope.

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  12. Choose the correct alternative and write it along with its alloted alp...

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  13. Choose the correct alternative and write it along with its alloted alp...

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  14. Choose the correct alternative and write it along with its alloted alp...

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  15. Choose the correct alternative and write it along with its alloted alp...

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  16. Choose the correct alternative and write it along with its alloted alp...

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  17. Choose the correct alternative and write it along with its alloted alp...

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  18. Choose the correct alternative and write it along with its alloted alp...

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  19. Choose the correct alternative and write it along with its alloted alp...

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  20. Choose the correct alternative and write it along with its alloted alp...

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  21. Choose the correct alternative and write it along with its alloted alp...

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