Exercise

Assertion: If the refractive index of the medium is high (denser medium) the velocity of the light in that medium will be small.
Reason: Refractive index of the medium is inversely proportional to the velocity of the light.

A light ray travelling through air is incident on a water surface at an angle of incidence $30°$. The refractive index of water is $\frac{4}{3}$. The angle of refraction will be

As incidence angle is increased for a given pair of the medium, the refraction angle will

The speed of the light in a diamond is $1,24,000 \mathrm{km} {\mathrm{s}}^{-1}$. Find the refractive index of diamond if the speed of light in air is $3,00,000 \mathrm{km} {\mathrm{s}}^{-1}$.

Fermat's principle states that the path taken by a light ray between two points is always a _____ line

$n_1 \sin i=n_2 \sin r$, is called _____ law.

You are given water, mustard oil, glycerine and kerosene. Out of these media a ray of light incident obliquely at the same angle would bend the most in _____.

Explain the relation between angle of incidence and angle of refraction with an experiment.