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Define the term refractive index of a me...

Define the term refractive index of a medium in terms of speed of light.

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Refractive index of a medium is defined as the ratio of speed of light in vacuum to the speed of light in the medium. i.e.
Refractive index (of a medium) `=("Speed of light in vacuum")/("Speed of light in medium")`
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Knowledge Check

  • Refractive index of a medium depends

    A
    On the medium only
    B
    On the incident light only
    C
    On both the conditions given in options (on the medium only) and (on the incident light only)
    D
    None of the above

  • When light moves from one medium to another (i) the frequency of light remains same and wavelength changes (ii) refractive index of a medium is the ratio of speed of light in vacuum and speed of light in medium (iii) refractive index of a medium is the ratio of wavelength of light in vacuum and wavelength in medium (iv) for denser medium, the value of refractive index is larger

    A
    (i), (ii)
    B
    (ii), (iii)
    C
    (ii), (iii), (iv)
    D
    all options are correct

  • The table below gives the refractive index of a few materials and the speed of light in that medium The speed of light in a medium 'A' having refractive index 2 .00 will be

    A
    ` 1 . 5 xx 10 ^(8) m// s `
    B
    ` 2 . 0 xx 10 ^(8) m // s `
    C
    ` 3 . 0 xx 10 ^(8) m // s `
    D
    ` 6 . 0 xx 10 ^(8) m // s `

    • Similar Questions

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    Refractive index of a medium depends

    n=(v)/(c) where n denotes the refractive index of a medium, v the speed of light in the medium and c the speed of light in vacuum.

    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 ?

    Define refractive index of a transparent medium ?

    What will be the refractive index of a transparent medium if the speed of light in the transparent medium is found to be 2.4 xx 10^(8) m//s ?

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