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Why there is no dispersion of light refr...

Why there is no dispersion of light refracted through a rectangular glass slab?

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After refraction at two parallel faces of a glass slab, a ray of light emerges in a direction parallel to the direction of incidence of white light. As rays of all colours emerge in the same direction, i.e., the direction of the incidence of white light, there is no dispersion. However, there is lateral displacement.
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Why is there no dispersion of light refracted through a rectangular glass slab ?

Write laws of refraction. Explain the same with the help of ray diagram, when a ray of light passes through a rectangular glass slab.

Knowledge Check

  • Assertion : There is no dispersion of light refracted through a rectangular glass slab. Reason : Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours.

    A
    If both assertion and reason are true and reason is the correct explanation of assertion.
    B
    If both assertion and reason are true but reason is not the correct explanation of assertion.
    C
    If assertion is true but reason is false.
    D
    If assertion and reason both are false.

  • Assertion: There is no dispersion of light refracted through a rectangular glass slab. Reason : Dispersion of light is the phenomenon of splitting of a beam of white light into its constituent colours.

    A
    Assertion is True, Reason is True, Reason is a correct explantion for Assertion
    B
    Assertion is True, Reason is True, Reason is not a correc explanation for Assertion
    C
    Assertion is True, Reason is False
    D
    Assertion is False, Reason is False.

  • Select from the following the best experimental set-up for tracing the path of a ray of light passing through a rectangular glass slab:

    A
    P
    B
    Q
    C
    R
    D
    S

    • Similar Questions

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    The power of a rectangular glass slab is zero .

    Amol performed an experiment on tracing the path of a ray of light passing through a rectangular glass slab. When ray of light enters from air to glass slab, he observed angle I =45^(@) . The angle of refraction must be

    In an experiment to trace the path of a ray of light passing through a rectangular glass slab, angle of incidence in air was given as 60^(@) . Two students P and Q found angle of refraction as 42^(@) and 65^(@) respectively. Who is right and why?

    In an experiment to trace the path of a ray of light passing through a rectangular glass slab, angle of incidence in air was given as 60^(@) . Two students P and Q found angle of refraction as 42^(@) and 65^(@) respectively. Who is right and why?

    Is there a spectrum observed when white light is passed through a thick rectangular glass slab ?

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