(A) The direction of propagation of an electromagnetic wave is given by the direction of the Poynting vector,which is $\vec E \times \vec B$.Given tha

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

$\vec E = {E_0}\hat i, \vec B = {B_0}\hat j$

(A) The direction of propagation of an electromagnetic wave is given by the direction of the Poynting vector,which is $\vec E \times \vec B$.Given that the wave propagates along the $+z-$ axis (unit vector $\hat k$),we must have $\hat E \times \hat B = \hat k$.Testing option $A$: $\hat i \times \hat j = \hat k$. This satisfies the condition.Therefore,the electric field is along the $x-$ axis and the magnetic field is along the $y-$ axis.

Class 11 Chemistry Data Entry - Chemistry Level 0 of all question bank

The electric and the magnetic field,associated with an $e.m.$ wave,propagating along the $+z-$ axis,can be represented by

AIPMT 2011 All AIPMT

A
$\vec E = {E_0}\hat i, \vec B = {B_0}\hat j$
B
$\vec E = {E_0}\hat k, \vec B = {B_0}\hat i$
C
$\vec E = {E_0}\hat j, \vec B = {B_0}\hat i$
D
$\vec E = {E_0}\hat j, \vec B = {B_0}\hat k$

Explore More

Browse All

Question Bank

All Subjects

Class 11 Questions

Class 11

Chemistry Questions

Chapter

Data Entry - Chemistry

Subtopic

Level 0 of all question bank

Previous Year

AIPMT 2011 Paper All AIPMT years →

The uncertainty in the location of a circulating electron is equal to its de-Broglie wavelength. The minimum percentage error in the measurement of its velocity under these circumstances will be approximately:

View Solution

$A$ ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation,which of the following is true?

IIT 2004

View Solution

Two soap bubbles combine to form a single bubble. In this process,the change in volume and surface area are respectively $V$ and $A$. If $P$ is the atmospheric pressure,and $T$ is the surface tension of the soap solution,the following relation is true :

AP EAMCET 2006

View Solution

Let $\bar{a} = 3 \hat{i} + 2 \hat{j} + x \hat{k}$ and $\bar{b} = \hat{i} - \hat{j} + \hat{k}$,for some real $x$. Then $|\bar{a} \times \bar{b}| = r$ is possible,if

MHT CET 2022

View Solution

${}^{18}_{8}O$ has a half-life of $4650 \ years$. $200 \ mg$ of a sample of ${}^{18}_{8}O$ is reduced to $25 \ mg$ in .......... $years$.

View Solution

Vedclass Products

For Students

Vedclass Test Series

Mock tests in real JEE/NEET style with performance analysis. 5-day free trial.

Start Free Trial

For Teachers

Exam Paper Generator

Generate Set A/B/C/D exam papers from 7.5L+ questions in 2 minutes. 3 chapters free.

Try Free

For Institutes

Online Exam Module

Live online exams with unlimited students, 360° analytics & white-label branding.

See Demo

The electric and the magnetic field,associated with an $e.m.$ wave,propagating along the $+z-$ axis,can be represented by

Similar Questions

The uncertainty in the location of a circulating electron is equal to its de-Broglie wavelength. The minimum percentage error in the measurement of its velocity under these circumstances will be approximately:

$A$ ray of light is incident on an equilateral glass prism placed on a horizontal table. For minimum deviation,which of the following is true?

Two soap bubbles combine to form a single bubble. In this process,the change in volume and surface area are respectively $V$ and $A$. If $P$ is the atmospheric pressure,and $T$ is the surface tension of the soap solution,the following relation is true :

Let $\bar{a} = 3 \hat{i} + 2 \hat{j} + x \hat{k}$ and $\bar{b} = \hat{i} - \hat{j} + \hat{k}$,for some real $x$. Then $|\bar{a} \times \bar{b}| = r$ is possible,if

${}^{18}_{8}O$ has a half-life of $4650 \ years$. $200 \ mg$ of a sample of ${}^{18}_{8}O$ is reduced to $25 \ mg$ in .......... $years$.

Vedclass Test Series

Exam Paper Generator

Online Exam Module