Embibe Experts Solutions for Chapter: Wave Optics, Exercise 1: Uttarakhand Board-2018

What is the difference between polarised and unpolarized light? Name any two methods to produce plane-polarised light.

Define the interference of light. Mention the condition for conditions for constructive and destructive interference.

In a Young's double-slit experiment, the slits are separated by $0.28 \mathrm{mm}$ and the screen is placed $1.4 \mathrm{m}$ away. The distance between the central bright fringe and the fourth bright fringe is measured to be $1.2 \mathrm{cm}$. Determine the wavelength of light used in the experiment.

What are coherent sources? In Young's double slit experiment, wave length of light used is $6000 \stackrel{\mathrm{o}}{\mathrm{A}}$. The distance between slits is $0.05 \mathrm{cm}$ and distance of screen from slits is $1 \mathrm{m}$. Calculate the fringe width.

Write the Huygens principle and prove the Snell's law of refractive with its help.

What is Brewster's law? Prove that when light incident on a transparent plane at polarising angle then reflected and refracted rays are perpendicular to each other.

What do you understand by diffraction? Write the difference between diffraction and interference.

Explain interference of light and mention essential conditions for it. Derive the formula for fringe width fringe by giving the principle of Young's experiment.