Identify the correct statements from the foll | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(B) Statement $A$ is incorrect because the direction of propagation is perpendicular to both the electric and magnetic fields,not along them.
Stateme

Vedclass · Accepted Answer

$B, D$ and $E$ only

Vedclass · Answer

(B) Statement $A$ is incorrect because the direction of propagation is perpendicular to both the electric and magnetic fields,not along them.
Statement $B$ is correct; in an electromagnetic wave,the energy density is shared equally between the electric field $(u_E = \frac{1}{2} \epsilon_0 E^2)$ and the magnetic field $(u_B = \frac{1}{2} \frac{B^2}{\mu_0})$,such that $u_E = u_B$.
Statement $C$ is incorrect because the electric and magnetic fields are perpendicular to each other.
Statement $D$ is correct; electromagnetic waves are transverse in nature,meaning $\vec{E}$,$\vec{B}$,and the direction of propagation $\vec{k}$ are mutually perpendicular.
Statement $E$ is incorrect because the ratio of the amplitude of the electric field to the magnetic field is equal to the speed of light $(E_0/B_0 = c)$,so $B_0/E_0 = 1/c$.
Therefore,only statements $B$ and $D$ are correct.

Similar Questions

The amplitude of the magnetic field part of a harmonic electromagnetic wave in vacuum is $B_0 = 510 \; nT$. What is the amplitude of the electric field (in $N/C$) part of the wave?

An electromagnetic wave in vacuum has the electric and magnetic field $\vec{E}$ and $\vec{B}$,which are always perpendicular to each other. The direction of polarization is given by $\vec{X}$ and that of wave propagation by $\vec{k}$. Then:

If the average power per unit area delivered by an electromagnetic wave is $9240 \ W \ m^{-2}$,then the amplitude of the oscillating magnetic field in the $EM$ wave is: (in $\mu T$)

The speed of an electromagnetic wave in a vacuum depends upon the source of radiation.

The electric field of a plane electromagnetic wave of wave number $k$ and angular frequency $\omega$ is given by $\vec{E} = E_0(\hat{i} + \hat{j}) \sin(kz - \omega t)$. Which of the following gives the direction of the associated magnetic field $\vec{B}$?

Vedclass Test Series

Exam Paper Generator

Online Exam Module