The speed of light in a transparent medium is 2.4*10^{8 m/s .calculate absolute refractive index of the medium}

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Solution

Absolute Refractive Index of a medium = Speed of light in vacuum/Speed of light in the medium ......= (3 x 10^8)/(2.4 x 10^8) = 1.25

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(1) The speed of light in a transparent medium is 2.4 × 10⁸ m/s. Calculate absolute refractive index of the medium.

(2) The speed of light in water and glass is 2.2 × 10⁸ m/s and 2 × 10⁸ m/s, respectively. What is the refractive index of −

(a) water w.r.t. glass

(b) glass w.r.t. water.

(3) Refractive index of water is 4/3 and speed of light in air is 3×10⁸ m/s. Find speed of light in water.

Q. A light wave travelling in a transparent homogeneous medium enters another transparent homogeneous medium of higher refractive index. The speed of light in the second medium ________.

A ray of light travelling from medium I in which speed of light is $2 \times 10^{8} m / s$ to a medium II in which speed of light is $1.5 \times 10^{8} m / s$ . Choose the correct ray diagram:

I. $u = 2 \times 10^{8} m / s$

II. $v = 1.5 \times 10^{8} m / s$

Q. 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

Q. A ray of light enters from air to a medium

X

. The speed of light in the medium is

1.5 \times 10^{8} m / s

and the speed of light in air is

3 \times 10^{8} m / s

. Find the Refractive index of the medium

X

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The speed of light in a transparent medium is 2.4*108 m/s .calculate absolute refractive index of the medium

Absolute Refractive Index of a medium = Speed of light in vacuum/Speed of light in the medium ......= (3 x 10^8)/(2.4 x 10^8) = 1.25

The speed of light in a transparent medium is 2.4*10^{8 m/s .calculate absolute refractive index of the medium}