Telangana Board Solutions for Chapter: Refraction of Light at Plane Surfaces, Exercise 1: Exercise 1

Why do stars appear twinkling?

A light ray is incident on air-liquid interface at $45°$ and is refracted at $30°$. What is the refractive index of the liquid? For what angle of incidence will the angle between reflected ray and refracted ray be $90°$?

In what cases does a light ray not deviate at the interface of two media?

Place an object on the table. Look at the object through the transparent glass slab. You will observe that it will appear closer to you. Draw a ray diagram to show the passage of light ray in this situation.

Why does a diamond shine more than a glass piece cut to the same shape?

Why is it difficult to shoot a fish swimming in water?

Explain why a test tube immersed at a certain angle in a tumbler of water appears to have a mirror surface for a certain viewing position?

When we sit at a camp fire, objects beyond the fire are seen swaying. Give the reason for it.