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Can a concave lens produce a real image?...

Can a concave lens produce a real image?

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Under what condition can a convex lens form a virtual image?

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BINA LIBRARY-Optics-I-EXERCISE
  1. With what kind of lens can you convert a diverging beam of rays into a...

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  2. Define centre of curvature.

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  3. Can a concave lens produce a real image?

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  4. Why has a lens two focal points but a mirror only one?

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  5. What is meant by power of a lens? What is its unit?

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  6. If a thin lens is dipped in water, does its focal length change?

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  7. Define principal axis of spherical mirror .

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  8. Is the focal length of a lens the same for lights of all colors ?

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  9. What is dispersion of light?

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  10. Which colour of white light suffers maximum deviation in dispersion?

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  11. Which colour of white light travels with least speed in a transparent ...

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  12. What is the nature of the final image in an astronomical telescope?

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  13. What type of lenses are used in a compound microscope?

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  14. what is optical centre?

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  15. What is the fundamental difference between a microscope and a telescop...

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  16. What is the nature of the final image in an astronomical telescope?

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  17. Why an astronomical telescope is not suitable for viewing earthly obje...

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  18. How many lenses are there in a terrestrial telescope?

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  19. By what length is the tube of a terrestrial telescope longer than the ...

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  20. Define the magnifying power of a telescope.

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