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  1. The phenomenon of change in direction of light when it passes from one medium to another is called

  2. A.

     Propagation

    B.

     Reflection

    C.

     Refraction

    D.

     Dispersion

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  3. The refractive index of a transparent medium is maximum for

  4. A.

     Red light

    B.

     Violet light

    C.

     Yellow light

    D.

     Green light

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  5. What type of lens is a magnifying glass?

  6. A.

     Diverging

    B.

     Spherical

    C.

     Converging

    D.

     Achromatic

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  7. Which of the following is not caused by atmospheric refraction of light ?

  8. A.

     Sun appearing red at sunset

    B.

     Twinkling of stars at night

    C.

     Sun appearing higher in the sky than it actually is

    D.

     Sun becoming visible two or three minutes before actual sunrise

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  9. Why does water tank appear shallower when viewed from the top?

  10. A.

     Due to reflection

    B.

     Due to refraction

    C.

     Due to diffraction

    D.

     Due to total internal reflection

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  11. Which one of the following processes is responsible for the glittering of air bubble rising through water?

  12. A.

     Reflection of light

    B.

     Refraction of light

    C.

     Total internal reflection of light

    D.

     Scattering of light

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  13. The increasing order of the refractive index of certain materials is (left to right) ________

  14. A.

     Rocksalt, Benzene, Kerosene, Ice

    B.

     Rock Salt, Ice, Benzene, Kerosene

    C.

     Ice, Kerosene, Benzene, Rock Salt

    D.

     Kerosene, Ice, Benzene, Rock Salt

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  15. Which color deviates least when passing through a Prism

  16. A.

     Blue

    B.

     Green

    C.

     Yellow

    D.

     Red

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  17. Which color deviates highest when passing through a Prism

  18. A.

     Indigo

    B.

     Green

    C.

     Violet

    D.

     Orange

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  19. A pond of water appears less deep due to

  20. A.

     Reflection

    B.

     Diffraction

    C.

     Refraction

    D.

     Polarisation

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