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What is lens?...

What is lens?

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What is a lens?

What is a lens formula? Derive an expression for lens formula for a convex lens forming a real image.

What is a lens maker's formula? Why is it called so? Derive it for a thin convex lens.

What is meant by power of lens? What is SI units? Define one dioptre.

A lens is a focal length - 0.5 m. What is the nature and power of the lens?

What is linear magnification? Write its expression for a convex lens.

What is magnification of a lens?

What is power of lens? Give commercial unit of power?

MBD-LIGHT:REFLECTION AND REFRACTION-EXAMPLE
  1. Which phenomenon is shown in the figure? Give its definition and give ...

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  2. Define Snell's law. What is refractive index? Write its mathematical f...

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  3. What is lens?

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  4. Define the terms: 1 Optical centre 2.Principal axis 3. principal focus...

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

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  6. What is lens formula ? Give its sign conventions

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  7. What is magnification of a lens?

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  8. Compare convex and concave lenses

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  9. What are the differences between reflection and refraction?

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  10. Define 1 dioptre of power of a lens

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

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

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

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

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

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

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

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

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

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

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