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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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CHHAYA PUBLICATION-REFRACTION OF LIGHT-HIGHER ORDER THINKING SKILL (HOTS QUESTION)
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  2. Can the value of absolute refractive index of a medium be less than 1?

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  11. Critical angle of glass and air is 42^(@) . If a ray of light is incid...

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  13. A ray of light in incident on the medium A [Fig. 2.74]. If the emergen...

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  14. The phenomenon of refraction is associated with the change of velocity...

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  15. A ray is incident at a small angle theta on a glass slab of thickness ...

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