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Define power of a lens. What is its unit...

Define power of a lens. What is its unit? One of student uses a lens of focal length 50 cm and another of -50 cm. What is the nature of the lens and its power used by each of them.

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MODERN PUBLICATION-REFLECTION AND REFRACTION-EXAMPLE
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  3. Define power of a lens. What is its unit? One of student uses a lens o...

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  4. A student focussed the image of a candle flame on a white screen using...

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  5. A student focussed the image of a candle flame on a white screen using...

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  6. A student focussed the image of a candle flame on a white screen using...

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  7. A student focussed the image of a candle flame on a white screen using...

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  8. Mention the type of mirrors used as rear view mirrors. List reasons to...

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  9. Mention the type of mirrors used as shaving mirror. List reason to jus...

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  10. Which kind of mirror is used in the head light or motor car and why?

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  11. What are the values of angle of incidence anglei and angle of reflecti...

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  12. Which type of mirror is used to watch the activities of customer in bi...

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  13. Define the SI unit of power of lens.

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  14. State Snell's law of refraction of light.

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  15. Why is absolute refractive index always greater than the one.

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  16. A ray of light is incident on the surface of a glass plate of refract...

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  17. If on applying cartesian sign convention for spherical lenses, the ima...

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  18. At which position of object will be the magnification be 1 in case of ...

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  19. At which position of object will be the magnification be 1 in case of ...

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  20. Discuss the case in which a convex lens behaves as a diverging lens.

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