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Snell's Law

The absolute ...

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The absolute refractive indices of glass and water are 3/2 and 4/3 respectively. How much faster does light travel in water than in glass ?

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Q. If the absolute refractive indices of glass and water are

\frac{3}{2}

\frac{4}{3}

respectively, what will be the velocity of light in water?

(If velocity of light in glass=

2 \times 10^{8}

Q. Refractive indices of water and glass are 4/3 and 3/2 respectively. A ray of light travelling in water is incident on the water-glass interface at 30

^{o}

. Calculate the angle of refraction.

Q. Refractive indices of water and glass are 4/3 and 3/2 respectively. A ray of light travelling in water is incident on the water-glass interface at

30^{0}

. Calculate the sine of angle of refraction.

Q. Find the critical angle of the ray of light traveling from glass to water, if refractive indices of glass and water are

5 / 3

4 / 3

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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