Narendra Kumar Solutions for Chapter: Light - Reflection and Refraction, Exercise 3: PROBLEMS FOR PRACTICE

A pond of depth $30 \mathrm{cm}$ is filled with water of refractive index $\frac{4}{3}$. Calculate apparent depth of the tank when viewed normally.

Light travels from rarer medium $1$ to a denser medium $2.$ The angle of incidence and refraction are respectively $45°$ and $30°$. Calculate the refractive index of second medium with respect to the first medium.

If refractive index of glass is $1.65$, what is the speed of light in glass?

Light enters from air into diamond which has a refractive index of $2.42$. Calculate the speed of light in diamond. The speed of light in air is $3.0\times {10}^8 \mathrm{m} {\mathrm{s}}^{-1}$.

How much time will light take to cross $2 \mathrm{mm}$ thick glass pane if refractive index of glass is $\frac{3}{2}$?

The refractive index of glass and water with respect to air are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. What will be the refractive index of water with respect to glass?