New chat PYQ Library Doubts Rank report

Sign in to see Recents

Sign in to save progress →

Electromagnetic Waves question

2024 · 4 Apr · Shift 1 · Q75

Guest · try one question or challengeGuest · try one question or challenge

PYQ Library
JEE Main
Physics
Electromagnetic Waves
2024 · 4 Apr · Shift 1 · Q75

Electromagnetic Waves question

2024 · 4 Apr · Shift 1 · Q75

JEE MainPhysicsElectromagnetic WavesMCQ+4 / −1

The electric field in an electromagnetic wave is given by

\overrightarrow{\mathrm{E}}=\hat{i} 40 \cos \omega(\mathrm{t}-z / \mathrm{c}) \mathrm{NC}^{-1}

. The magnetic field induction of this wave is (in SI unit) :

A
$\overrightarrow{\mathrm{B}}=\hat{j} \frac{40}{\mathrm{c}} \cos \omega(\mathrm{t}-z / \mathrm{c})$
B
$\overrightarrow{\mathrm{B}}=\hat{i} \frac{40}{\mathrm{c}} \cos \omega(\mathrm{t}-z / \mathrm{c})$
C
$\vec{B}=\hat{j} 40 \cos \omega(t-z / c)$
D
$\overrightarrow{\mathrm{B}}=\hat{k} \frac{40}{\mathrm{c}} \cos \omega(\mathrm{t}-z / \mathrm{c})$

More from Electromagnetic Waves

Arrange the following in the ascending order of wavelength: A. Gamma rays $(λ_{1})$ B. $x$ - rays $(λ_{2})$ C. Infrared waves $(λ_{3})$ D. Microwaves $(λ_{4})$ Choose the…2024 · MCQ
Match List I with List II : Choose the correct answer from the options given below : Includes table2024 · MCQ
Electromagnetic waves travel in a medium with speed of $1.5 \times 1 0^{8} m s^{- 1}$ . The relative permeability of the medium is 2.0. The relative permittivity will be:2024 · MCQ
In the given electromagnetic wave $E_{y} = 600 sin (ω t - kx) Vm^{- 1}$ , intensity of the associated light beam is (in $W / m^{2}$ : (Given $ϵ_{0} = 9 \times 1 0^{- 12} C^{2} N^{- 1} m^{- 2}$ …2024 · MCQ
Average force exerted on a non-reflecting surface at normal incidence is $2.4 \times 1 0^{- 4} N$ . If $360 W / cm^{2}$ is the light energy flux during span of 1 hour 30 minutes, Then the area of the surface is:2024 · MCQ
A plane EM wave is propagating along $x$ direction. It has a wavelength of $4 mm$ . If electric field is in $y$ direction with the maximum magnitude of $60 Vm^{- 1}$ , the equation for magnetic field is :2024 · MCQ
The magnetic field in a plane electromagnetic wave is $B_{y} = (3.5 \times 1 0^{- 7}) sin (1.5 \times 1 0^{3} x + 0.5 \times 1 0^{11} t) T$ . The corresponding electric field will be :2024 · MCQ
A plane electromagnetic wave propagating in $x$ -direction is described by $E_{y} = (200 Vm^{- 1}) sin [1.5 \times 1 0^{7} t - 0.05 x];$ The intensity of the wave is : (Use $ϵ_{0} = 8.85 \times 1 0^{- 12} C^{2} N^{- 1} m^{- 2}$ …2024 · MCQ