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A ray of light travelling in air enters ...

A ray of light travelling in air enters obliquely into water. Does the light ray bend towards the normal or away from the normal ? Why ?

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When a ray of light travels from air into water obliquely, it bends towards the normal. This is because water is optically denser than air. On entering water, speed of light decreases and the light bends towards normal.
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Knowledge Check

  • A ray of light travelling obliquely from denser to rarer medium

    A
    bends towards the normal
    B
    bends away from the normal
    C
    does deviate from its path
    D
    none of these

  • A ray of light travelling in air goes into water. The angle of refraction will be:

    A
    `90^(@)`
    B
    smaller than the angle of incidence
    C
    equal to the angle of incidence
    D
    greater than the angle of incidence.

  • A ray of light travelling in air falls obliquely on the surface of a clam poun. It will

    A
    go into the water without deviating from its path
    B
    deviate away from the normal
    C
    deviate towards the normal
    D
    Turn back on its original path

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    When a ray of light travelling in glass enters into water obliquely:

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