Electromagnetic wave consists of periodically oscillating electric and magnetic vectors
Electromagnetic wave consists of periodically oscillating electric and magnetic vectors
- A
in mutually perpendicular planes but vibrating with a phase difference of $\pi $
- B
in mutually perpendicular planes but vibrating with a phase difference of $\frac {\pi }{2}$
- C
in randomly oriented planes but vibrating in phase
- D
in mutually perpendicular planes but vibrating in phase
Similar Questions
An electromagnetic wave with frequency $\omega $ and wavelength $\lambda $ travels in the $+y$ direction. Its magnetic field is along $+x$ axis. The vector equation for the associated electric field (of amplitude $E_0$) is
An electromagnetic wave with frequency $\omega $ and wavelength $\lambda $ travels in the $+y$ direction. Its magnetic field is along $+x$ axis. The vector equation for the associated electric field (of amplitude $E_0$) is
Light with an energy flux of $18 \;W / cm ^{2}$ falls on a nonreflecting surface at normal incidence. If the surface has an area of $20\; cm ^{2},$ find the average force exerted on the surface during a $30$ minute time span.
Light with an energy flux of $18 \;W / cm ^{2}$ falls on a nonreflecting surface at normal incidence. If the surface has an area of $20\; cm ^{2},$ find the average force exerted on the surface during a $30$ minute time span.
A plane electromagnetic wave of frequency $500\, MHz$ is travelling in vacuum along $y-$direction. At a particular point in space and
time, $\overrightarrow{ B }=8.0 \times 10^{-8} \hat{ z } \;T$. The value of electric field at this point is
(speed of light $\left.=3 \times 10^{8}\, ms ^{-1}\right)$
$\hat{ x }, \hat{ y }, \hat{ z }$ are unit vectors along $x , y$ and $z$ direction.
A plane electromagnetic wave of frequency $500\, MHz$ is travelling in vacuum along $y-$direction. At a particular point in space and
time, $\overrightarrow{ B }=8.0 \times 10^{-8} \hat{ z } \;T$. The value of electric field at this point is
(speed of light $\left.=3 \times 10^{8}\, ms ^{-1}\right)$
$\hat{ x }, \hat{ y }, \hat{ z }$ are unit vectors along $x , y$ and $z$ direction.
- [JEE MAIN 2021]
A plane electromagnetic wave is propagating along the direction $\frac{\hat{i}+\hat{j}}{\sqrt{2}},$ with its polarization along the direction $\hat{\mathrm{k}}$. The correct form of the magnetic field of the wave would be (here $\mathrm{B}_{0}$ is an appropriate constant)
A plane electromagnetic wave is propagating along the direction $\frac{\hat{i}+\hat{j}}{\sqrt{2}},$ with its polarization along the direction $\hat{\mathrm{k}}$. The correct form of the magnetic field of the wave would be (here $\mathrm{B}_{0}$ is an appropriate constant)
- [JEE MAIN 2020]
If electric field intensity of a uniform plane electro magnetic wave is given as
$E =-301.6 \sin ( kz -\omega t ) \hat{a}_{ x }+452.4 \sin ( kz -\omega t )$ $\hat{a}_{y} \frac{V}{m}$
Then, magnetic intensity $H$ of this wave in $Am ^{-1}$ will be
[Given: Speed of light in vacuum $c =3 \times 10^{8} ms ^{-1}$, permeability of vacuum $\mu_{0}=4 \pi \times 10^{-7} NA ^{-2}$ ]
If electric field intensity of a uniform plane electro magnetic wave is given as
$E =-301.6 \sin ( kz -\omega t ) \hat{a}_{ x }+452.4 \sin ( kz -\omega t )$ $\hat{a}_{y} \frac{V}{m}$
Then, magnetic intensity $H$ of this wave in $Am ^{-1}$ will be
[Given: Speed of light in vacuum $c =3 \times 10^{8} ms ^{-1}$, permeability of vacuum $\mu_{0}=4 \pi \times 10^{-7} NA ^{-2}$ ]
- [JEE MAIN 2022]