Question

Velocity of lights is minimum & maximum

Answer 1

Velocity of Light is maximum in vacuum

Answer 2

$\huge\mathfrak\pink{hola}$

Velocity of light is Maximum in the medium with the lowest refractive index and Minimum in the medium with the highest refractive index.

$\bf \: Air/Vacuum$is the medium which has lowest refractive index (1.0003) and hence the velocity of light is $Maximum$

$\bf \: Diamond$has the highest refractive index(2.42) and hence the velocity of light is $Minimum$.

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