The speed of light in air is 3 times- 108 m-s- In medium X its speed is 2 times- 108 m-s and in medium Y the speed of light is 2-5 times- 108 m-s Calculate-a- air nx-b- air nY-c- x 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 in a ...

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Standard IX

Physics

Refraction

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