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What is a lens ?...

What is a lens ?

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A lens is a transparent material bound by two surfaces, out of which at least one surface is spherical.
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NAVNEET PUBLICATION - MAHARASHTRA BOARD-LENSES-Answer the following questions :
  1. What is a lens ?

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  2. In which instruments have you seen a lens ?

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  3. How is a lens different from a mirror ?

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  4. Make a list of optical devices you know.

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  5. Do you know which is the natural optical device ?

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  6. What is a convex lens ?

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  7. What is a concave lens ?

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  8. Draw neat labelled diagrams : Type of lenses.

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  9. In general, when a ray of light pasess through a lens, there occurs a ...

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  10. With reference to spherical lenses, state the meaning of the following...

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  11. State the rules used for drawing ray diagrams for the fomation of an i...

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  12. In the case of a convex lens, show the path of the refraction ray when...

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  13. Draw neat and well labelled ray diagrams for image formation by a conv...

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  14. Draw neat and well labelled ray diagrams for image formation by a conv...

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  15. Draw neat and well labelled ray diagrams for image formation by a conv...

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  16. Draw neat and well labelled ray diagrams for image formation by a conv...

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  17. Draw neat and well labelled ray diagrams for image formation by a conv...

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  18. Draw neat and well labelled ray diagrams for image formation by a conv...

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  19. Observe the following figure and complete the table :

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  20. At which position will you keep an object in front of a convex lens to...

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