Physics, asked by RockstarAryan7185, 1 year ago

The speed of light in a given medium is 2/3rd of its speed in vacuum the absolute refractive index of the medium equals to

Answers

Answered by Physicist182
190
Let's speed of light in vacuum = c

Refractive index= c / 2/3 × c

Refractive index = 3/2 = 1.5
Answered by AnkitaSahni
8

Given :

The speed of light in a given medium is 2/3rd of its speed in vacuum

To Find :

The absolute refractive index of the medium

Solution :

Velocity of light in vacuum (c) = 3 × 10^{8} m/sec

As per question,

    Velocity of in a given medium (v) = \frac{2}{3} × velocity of light in vacuum

                                                       = \frac{2}{3} × 3 × 10^{8}

                                                       = 2 × 10^{8} m/sec

Absolute refractive index (μ) =  \frac{c}{v}

                                               = \frac{3 * 10^8}{2 * 10^8}

                                               = 1.5

Therefore, the absolute refractive index of the medium is found to be 1.5.

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