Embibe Experts Solutions for Chapter: Wave Theory of Light, Exercise 1: Exercise 1

A plane wavefront of wavelength $5000 \mathrm{\AA }$ falls on a slit $0.5 \mathrm{mm}$ wide. A convex lens of focal length $0.8 \mathrm{m}$ placed behind the slit focuses the light on a screen. What is the linear diameter of second maximum?

Huygens' principle of secondary wavelets may be used to

The meaning of wavefront is:-

A monochromatic plane wave is diffracted at a small aperture. The diagram illustrates successive wavefronts. The time after which some portion of the wavefront $\mathrm{AB}$ will reach $\mathrm{P}$ is $[$ Speed $=\mathrm{c}$ and wavelength $=\lambda]$

The following figure represents a wave front $AB$ which passes from air to another transparent medium and produces a new wave front $CD$ after refraction. The refractive index of the medium is ($PQ$ is the boundary between air and the medium).

The following figure represents a wave front $AB$ which passes from air to another transparent medium and produces a new wave front $CD$ after refraction. The refractive index of the medium is ($PQ$ is the boundary between air and the medium).

A galaxy moves with respect to the earth so that Sodium line of $589.0 \mathrm{nm}$ is observed at $589.6 \mathrm{nm}.$ The speed of the galaxy is

In context of Doppler's effect in light, the term 'red shift' signifies