14.The absolute refractive indices of glass and water are 4/3 & 3/2, respectively. If speed of light in glass is 2x108 m/s , calculate the speed of light in vacum and water.

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(a) State the laws of refraction of light. Give an expression to relate the absolute refractive index of a medium with speed of light in vacuum.

(b) The refractive indices of water and glass with respect to air are $\frac{4}{3}$ and $\frac{3}{2}$ respectively. If the speed of light in glass is $2 \times 10^{8} m s^{- 1}$ , find the speed of light in (i) air, (ii) water

Q. The refractive indices of glass and water with respect to air are

\frac{3}{2}

and

\frac{4}{3}

respectively. If the speed of light in glass is

2 \times 108 m / s

. Find the speed of light in water.

Q. Solve the following examples.
a. If the speed of light in a medium is 1.5 × 10⁸ m/s, what is the absolute refractive index of the medium?
b. If the absolute refractive indices of glass and water are 3/2 and 4/3 respectively, what is the refractive index of glass with respect to water?

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