The perpendicular distance between the original path of the incident ray and the emergent ray coming out of a glass slab is called .

A ray of light is incident as shown. If A, B and C are three transparent media, then which among the following options is true for the given diagram?

In the diagram shown above $n_1, n_2 \mathrm{and} n_3$ are refractive indices of the media $1,2 \mathrm{and} 3$ respectively. Which one of the following is true in this case?

A ray of light starting from air passes through medium A of refractive index $1.50$, enters medium B of refractive index $1.33$ and, finally enters medium C of refractive index $2.42$. If this ray emerges out in air from C, then for which of the following pairs of media the bending of light is least?

Light enters from air to glass plate having $1.50$ refractive index. What is the speed of light in glass? (Given-speed of light in vacuum $3\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$)

If a beam of red light and a beam of violet light are incident at the same angle on the inclined surface of a prism from air medium and produce angles of refraction $r \mathrm{and} v$ respectively. Which of the following is correct?

What is the relation between the refractive index of water with respect to air $\left({}_{a }\mu _w\right)$, and the refractive index of air with respect to water $\left({}_{w }\mu _a\right)$.

The refractive index of medium A is $1.5$ and that of medium B is $1.33$. If the speed of light in air is  $3\times {10}^8 \mathrm{m}/\mathrm{s}$, what is the speed of light in medium A and B respectively?

What will be the velocity and wavelength of light in a medium of refractive index $1.5$ if the wavelength of the light is $6000 \stackrel{\circ }{\mathrm{A}}$ in air medium?. Take the speed of light in air$=3\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$.

If the refractive index of water with respect to air (${}_{a }\mu _w$)  is $\frac{5}{3}$.  Calculate the refractive index of air with respect to water (${}_{w }\mu _a$).