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A ray of monochromatic light travelling ...

A ray of monochromatic light travelling in vacuum with speed C, wavelength X and frequency u, enters into a medium of refractive index `1.5`. What will be its new speed, wavelength and frequency ?

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PUNJAB BOARD PREVIOUS YEAR PAPERS-Refraction of Light and Lenses-EXERCISE
  1. A 5.0 cm long needle is placed vertically at a distance 20 cm in front...

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  2. A ray of light of frequency of 5 x 10^14 Hz is passed through a liquid...

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  3. A ray of monochromatic light travelling in vacuum with speed C, wavele...

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  4. For the same angle of incidence, the angle of refraction in three diff...

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  5. Two lenses, one diverging of power 2D and the other converging of powe...

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  6. The radii of curvature of the faces of a double convex lens are 20 cm ...

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  7. A convex lens has 10 cm focal length in air.What is its focal length i...

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  8. If the critical angle for total internal reflection from medium to vac...

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  9. The radii of curvature of the faces of a double convex lens are 20 cm ...

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  10. A convex lens has 12 cm focal length in air. What is its focal length ...

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  11. The radii of curvature of the faces of a double convex lens are 10 cm ...

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  12. A convex lens has 20 cm focal length in air.What is its focal length i...

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  13. A concave lens is placed in contact with a convex lens of focal length...

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  14. A convex lens has 10 cm focal length in air.What is its focal length i...

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  15. A concave lens is kept in contact with convex lens of focal length 20 ...

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  16. A convex lens is made of glass of refractive index 1.5. If radius of c...

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

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

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

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

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