Electric field for a plane electromagnetic wave travelling in +y direction is shown.&nbsp

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8.Electromagnetic waves

easy

The electric field for a plane electromagnetic wave travelling in the $+y$ direction is shown. Consider a point where $\vec E$ is in $+z$ direction. The $\vec B$ field is

In the $+x$ direction

In the $-x$ direction

In the $+y$ direction

None of these

Solution

The wave equation for a plane electric wave traveling in the $x$ direction in space is

$\frac{\partial^2 E }{\partial y ^2}=\frac{1}{ c ^2} \frac{\partial^2 E }{\partial t ^2}$

with the same form applying to the magnetic field wave in a plane perpendicular the electric field. Both the electric field and the magnetic field are perpendicular to the direction of travel y.

Standard 12

Physics

Electromagnetic waves are transverse in nature is evident by

easy

(AIEEE-2002)

The property which is not of an electromagnetic wave travelling in free space is that:

medium

(NEET-2024)

Pointing vectors $\vec S$ is defined as a vector whose magnitude is equal to the wave intensity and whose direction is along the direction of wave propagation. Mathematically, it is given by $\vec S = \frac{1}{{{\mu _0}}}(\vec E \times \vec B)$. Show the nature of $\vec S$ vs $t$ graph.

medium

Wavelength of light of frequency $100\;Hz$

easy

(AIPMT-1999)

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) :

medium

(JEE MAIN-2023)

The electric field for a plane electromagnetic wave travelling in the $+y$ direction is shown. Consider a point where $\vec E$ is in $+z$ direction. The $\vec B$ field is

Solution

Similar Questions

Electromagnetic waves are transverse in nature is evident by

The property which is not of an electromagnetic wave travelling in free space is that:

Pointing vectors $\vec S$ is defined as a vector whose magnitude is equal to the wave intensity and whose direction is along the direction of wave propagation. Mathematically, it is given by $\vec S = \frac{1}{{{\mu _0}}}(\vec E \times \vec B)$. Show the nature of $\vec S$ vs $t$ graph.

Wavelength of light of frequency $100\;Hz$

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) :

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