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A lens of focal length 12 cm produces a ...

A lens of focal length 12 cm produces a virtual image. The size of image is `1//3` times the size of the object. What kind of lens it is ? Determine the positions of the object and the image.

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Refraction of Light and Lenses-EXERCISE
  1. A convex lens is made of glass of refractive index 1.5. If radius of c...

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  2. A needle placed 45cm from a lens forms an image on the screen placed 9...

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  3. A lens of focal length 12 cm produces a virtual image. The size of ima...

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  4. The image formed by the lens is erect and its length is three times th...

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  5. A lens placed at a distance of 20 cm from an object produces a virtual...

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  6. A needle placed 40 cm from a lens forms an image on a screen placed 80...

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  7. What is the focal lengthof the combination of a convex lens of focal l...

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  8. An object of size 5 cm is placed at distance of 25 cm in front of a co...

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  9. An object of size 10 cm is placed at distance of 20 cm in front of aco...

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  10. Two lenses of powers+15D and -5D are in contact with each other. What ...

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  11. If the focal length of a converging lens is 50 cm. What is the power o...

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  12. Define refractive index?

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

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  14. What is refraction of light?

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  15. A convex lens made of a material of refractive index mu1 , is kept in ...

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  16. A convex lens made of a material of refractive index 'mu1' is kept in ...

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  17. A convex lens made of a material of refractive index mu1 is kept ih a...

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  18. Define critical angle for total internal reflection.

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  19. Define critical angle for total internal reflection.

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

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