Asok Kumar Das and Chittaranjan Dasgupta Solutions for Chapter: Electromagnetic Waves, Exercise 1: EXERCISE 18

An electric field of $1500 \mathrm{V} {\mathrm{m}}^{-1}$and a magnetic field of $0.040 \mathrm{Wb} {\mathrm{m}}^{-2}$ act on a moving electron. The minimum uniform speed along a straight line the electron could have is

In an electromagnetic wave, direction of propagation is in the direction of

If c is the speed of electromagnetic wave in vacuum, its speed in a medium of dielectric constant $\mathrm{K}$ and relative permeability $\mathrm{\mu }$ is

A particle of mass $1\times {10}^{-26} \mathrm{kg}$ and charge $1.6\times {10}^{-19}\mathrm{C}$ travelling with a velocity $1.28\times {10}^6{ \mathrm{ms}}^{-1}$ along positive X axis enters a region in which a uniform electric field $\overrightarrow{\mathrm{E}}$ and a uniform magnetic field $\overrightarrow{B}$ are present. If $\mathrm{E}=-10.24\times {10}^3\hat{\mathrm{k}}{\mathrm{NC}}^{-1}$ and $\overline{\mathrm{B}}=8\times {10}^2\hat{\mathrm{i}}{\mathrm{Wbm}}^{-2}$, the direction of motion of the particle is

Which of the following is absorbed by the ozone layer?

An electromagnetic radiation has an energy of $13.2$ key. Then the radiation belong to the region of

Order of energy of $\mathrm{X}$ -rays $\left({\mathrm{E}}_{\mathrm{X}}\right)$ radio waves $\left({\mathrm{E}}_{\mathrm{R}}\right)$ and microwaves $\left({\mathrm{E}}_{\mathrm{M}}\right)$ is given by?

The maximum value of electric field at a distance of $3 \mathrm{m}$ from the source in ${\mathrm{Vm}}^{-1}$. A point source of electromagnetic radiation has an average power output of $1500W.$