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Can the value of absolute refractive ind...

Can the value of absolute refractive index of a medium be less than 1?

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The absolute refractive index of a medium is the ratio of the velocity of light in vacuum to the velocity of light in that medium. Since the velocity of light in vacuum is greater than that in any other medium, the value of the absolute refractive index of a medium cannot be less than 1.
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Knowledge Check

  • Statement I : Relative refractive index of a medium can be less than unity. Statement II : The angle of incidence is equal to the angle of refraction.

    A
    Statement I is true, statement II is true, statement II is a correct explanation for statement I.
    B
    Statement I is true, statement II is true, statement II is not a correct explanation for statement I.
    C
    Statement I is true, statement II is false.
    D
    Statement I is false, statement II is true. '

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