Electromagnetic Waves

If $\vec{E}$ and $\vec{K}$ represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector is given by: ($\omega\,-$ angular frequency)

A plane electromagnetic wave propagatingalong y-direction can have the following pairof electric field $(\vec{E})$and magnetic field $(\vec{B})$components?

A plane electromagnetic wave of frequency $20\mathrm{MHz}$ propagates in free space along $x$-direction. At a particular space and time $\vec{E}=6.6\hat{j}Vm^{-1}$. What is $\vec{B}$ at this point?

If $2.5\times\,10^{-6}N$ average force is exerted by a light wave on a non-reflecting surface of $30\mathrm{cm}^{2}$ area during $40\min\,$ of time span, the energy flux of light just before it falls on the surface is…

Match List I with List II List I List II A. Gauss's law of magnetostatics i. $\oint\,\vec{E}\cdot\,d\vec{a}=\frac{1}{\epsilon\,_{0}}\int\,\rho\,dV$ B. Faraday's law of electro magnetic induction ii.…

Which of the following Maxwell's equation is valid for time varying conditions but not valid for static conditions:

The intensity of the light from a bulb incident on a surface is $0.22Wm^{-2}$. The amplitude of the magnetic field in this light-wave is _____$\times\,10^{-9}T$ (Given : Permittivity of vacuum…

Which of the following are not electromagnetic waves?

Match List - I with List - II List-I List-II (a) UV rays (i) Diagnostic tool in medicine (b) $X$-rays (ii) Water purification (c) Microwave (iii) Communication, Radar (d) Infrared wave (iv) Improving visibility in foggy…

Match List-I with List II of Electromagnetic waves with corresponding wavelength range: List I List II (A) Microwave (I) $400\mathrm{nm}$ to $1\mathrm{nm}$ (B) Ultraviolet (II) $1\mathrm{nm}$ to $10^{-3}\mathrm{nm}$ (C)…

The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by $E_{x}=E_{0}\sin\,\left(kz-\omega\,t\right)$ $B_{y}=B_{0}\sin\,\left(kz-\omega\,t\right)$ Then thecorrect…

The electric field in an electromagnetic wave is given by $E=\left(50NC^{-1}\right)\sin\,\omega\,(t-\frac{x}{c})$ The energy contained in a cylinder of volume $V$ is $5.5\times\,10^{-12}J.$The value of $V$ is…