The speed of light in air is 3 - 108 m - s- In medium X its speed is 2 - 108 m - s and in medium Y the speed of light is 2-5 - 108 m - s Calculate-a air nxb air nYcX nY

nbsp;(a) air nx = (Speed of light in air) / (Speed of light in medium X) = (3 times; 108) / (2 times; 108) = 1.5 (b) air n Y = nbsp;(Speed of light i ...

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Standard X

Physics

Absolute and Relative Refractive Index

The speed of ...

Question

The speed of light in air is 3 × 10⁸ m/s. In medium X its speed is 2 × 10⁸ m/s and in medium Y the speed of light is 2.5 × 10⁸ m/s Calculate:

(a) _air n_x
(b) _air n_Y
(c) _x n_Y

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Solution

(a) _air n_x = (Speed of light in air) / (Speed of light in medium X)
= (3 × 10⁸) / (2 × 10⁸)
= 1.5
(b) _air n _{Y =}(Speed of light in air) / (Speed of light in medium Y)
= (3 × 10⁸) / (2.5 × 10⁸)
= 1.2
(c) _x n_Y₌(Speed of light in medium X) / (Speed of light in medium Y)
= (2 × 10⁸) / (2.5 × 10⁸)
= 0.8

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The speed of light in air is 3 × 108 m/s. In medium X its speed is 2 × 108 m/s and in medium Y the speed of light is 2.5 × 108 m/s Calculate: (a) air nx (b) air nY (c) x nY

The speed of light in air is 3 × 10⁸ m/s. In medium X its speed is 2 × 10⁸ m/s and in medium Y the speed of light is 2.5 × 10⁸ m/s Calculate:

(a) _air n_x
(b) _air n_Y
(c) _x n_Y