Unit 7 Wave optics Class 12 Physics

Theory of Light

Wavefront

Huygens’ Principle

Proof for laws of reflection using Huygens’ Principle

Proof for laws of refraction using Huygens’ Principle

Example 7.1

Interference

Example 7.2

Example 7.3

Example 7.4

Phase difference and path difference

Example 7.5

Coherent sources

Double slit as coherent sources

Young’s double slit experiment

Example 7.6

Interference in white light (polychromatic light)

Example 7.7

Brewster's Law

Fresnel and Fraunhofer diffractions

Diffraction in single slit

Example 7.9

Example 7.10

Discussion on first minimum

Fresnel’s distance

Example 7.11

Difference between interference and diffraction

Diffraction in grating

Example 7.12

Example 7.13

Experiment to determine the wavelength of monochromatic light

Determination of wavelength of different colours

Resolution Airy’s discs Rayleigh’s criterion

Example 7.14

Polarisation

Polarisation by selective absorption