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What is lens formula ? Give its sign con...

What is lens formula ? Give its sign conventions

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MBD-LIGHT:REFLECTION AND REFRACTION-EXAMPLE
  1. Define the terms: 1 Optical centre 2.Principal axis 3. principal focus...

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  2. How is image formed by a concave lens? Show by drawing diagram as to w...

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  3. What is lens formula ? Give its sign conventions

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  4. What is magnification of a lens?

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  5. Compare convex and concave lenses

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  6. What are the differences between reflection and refraction?

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  7. Define 1 dioptre of power of a lens

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  8. The radius of curvature of a concave mirror is 30 cm what is its focal...

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  9. The radius of curvature of a convex mirror is 40 cm what is its focal ...

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  10. A concave mirror produces three times magnified real image of an objec...

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  11. An object is placed at a distance of 10 cm from a convex mirror of foc...

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  12. Light enters from air to diamond having refractive index 2.4. what is ...

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  13. Light travels from air to water of refractive index 1.33. calculate th...

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  14. Refractive index of water w.r.t. air is 4/3and that of glass w.r.t air...

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  15. An object is 2m away from a lens. Which forms an erect image1/4th ...

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  16. A convex lens of focal length 20 cm is placed at a distance of 24 cm f...

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  17. A concave lens has focal length of 15 cm. At what distance should the ...

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  18. A convex lens of power 4D is placed at a distance of 40 cm from a wall...

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  19. Which mirror has a widset field of view?

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  20. Define a spherical mirror.

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