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Define refractive index of a transparent...

Define refractive index of a transparent medium ?

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Refractive index of a transparent medium is defined as the ratio of speed of light in free space (vaccum) to the speed of light in the given medium.
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Define refractive index of a tranparent medium . The speed of light in a medium of absolute refractive index 1.5 " is " 2xx10^(8)ms^(-1) . What is the speed of light in vacuum ?

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Knowledge Check

  • Why is refractivce index in a transparent medium greater than one ?

    A
    Because the speed of light in vaccum is medium
    B
    Because the speed of light in veccum is always greater than speed in a transparent medium
    C
    Frequency of wave charges when it crosses medium
    D
    none of the above

  • Refractive index of a transparent medium, so that it is invisible in vacuum is

    A
    1
    B
    `lt 1`
    C
    ` gt 1.33`
    D
    `1.33`

  • Assertion:- Different colours of light have same velocity in vaccum, but they have differnet velocites in any other transparent medium. Reason:- For different colours, refractive index of transparent medium has different values.

    A
    If both Assertion `&` Reason are True `&` the Reason is a correct explanation of the Assertion.
    B
    If both Assertion `&` Reason are True but Reason is not a correct explanation of the Assertion.
    C
    If Assertion is True but the Reason is False.
    D
    If both Assertion `&` Reason are False.

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    The absolute refractive index of a transparent medium is 5//3 . Find the speed of light in the medium.

    (a) What do you mean by refractive index of one transparent medium with respect to another ? How is it related to absolute refractive indices of two media ? (b) Can absolute refractive index of a medium be less than one ? Given reason.

    Define refractive index of a medium.

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