Pankaj Bhatt Solutions for Chapter: Refraction at Plane Surfaces, Exercise 2: QUESTIONS

A pencil dipped in water appears broken and shortened in length. Why?

Explain why a print paper appears to be raised when a glass block is placed over it.

Why the stars in the sky appear twinkling but planets do not?

A coin placed in a container is not visible from a certain position from outside. Describe a method with the use of water to make the coin visible from the same position.

Thickness of a transparent slab is $12\mathrm{cm}$. A point object when placed at the bottom of the slab appears raised by $4\mathrm{cm}$. What is the refractive index of the slab?

Apparent depth of a swimming pool is $1.5\mathrm{m}$. What is the real depth of the pool? ${\mu }_w=1.33$

A bird is flying at the height of $3 \mathrm{m}$ above the river surface while a fish is $4 \mathrm{m}$ below the surface. At what depth would the fish appear to the bird? At what height the bird would appear to the fish? Given refractive index of water with respect to air $\left({}_a\mu _w\right)=4/3$

Figure shows two unmixable transparent liquids refractive indices ${\mu }_1$ and ${\mu }_2$ filled in a container. The depth of each liquid is $d$. Calculate apparent depth of a coin placed at bottom of container.