Q JEE MAIN 2026

A magnetic field vector in an electromagnetic wave is represented by $$ \stackrel{\otimes}{B}=B_0 \sin \left(2 \pi v t-\frac{2 \pi x}{\lambda}\right)...

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Q JEE MAIN_2026

For an electromagnetic wave propagating through vacuum, $\vec{k}, \vec{E}$ and $\omega$ represent propagation vector, electric field and angular frequency, respectively....

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Q JEE MAIN_2026

A point light source emits E.M. waves in free space. A detector, placed at a distance of Lm, measures the...

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Q JEE MAIN_2026

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R)....

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Q JEE MAIN_2026

A displacement current of 4.0 A can be set up in the space between two parallel plates of $...

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Q JEE MAIN_2026

An electromagnetic wave travels in free space along the $x$-direction. At a particular point in space and time, $...

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Q JEE MAIN_2026

An electromagnetic wave travelling in $x$-direction is described by field equation $\mathrm{E}_y=300 \sin \omega\left(t-\frac{x}{\mathrm{c}}\right)$. If the electron is restricted to...

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Q JEE MAIN 2026

The equation of the electric field of an electromagnetic wave propagating through free space is given by: $...

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Q JEE MAIN 2026

The electric field of an electromagnetic wave travelling through a medium is given by $...

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Q JEE MAIN 2026

Match the LIST-I with LIST-II Choose the correct answer from the options given below:

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Q JEE MAIN 2026

The ratio of speeds of electromagnetic waves in vacuum and a medium, having dielectric constant $k=3$ and permeability of $...

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Q JEE MAIN 2026

Match List - I with List - II. Choose the correct answer from the options given below :

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Q JEE MAIN 2026

The electric field of a plane electromagnetic wave, travelling in an unknown nonmagnetic medium is given by, $$ E_y=20 \sin...

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Q JEE MAIN 2026

A laser beam has intensity of $4.0 \times 10^{14} \mathrm{~W} / \mathrm{m}^2$. The amplitude of magnetic field associated with beam...

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Q JEE MAIN 2026

An electromagnetic wave of frequency 100 MHz propagates through a medium of conductivity, $\sigma=10 \mathrm{mho} / \mathrm{m}$. The ratio of...

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Q JEE MAIN 2026

The electric field in a plane electromagnetic wave is given by : $$ E_y=69 \sin \left[0.6 \times 10^3 x-1.8 \times...

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Q JEE MAIN 2020

A plane electromagnetic wave, has frequency of $2.0 \times 1010 \mathrm{~Hz}$ and its energy density is $...

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Q JEE MAIN 2020

In a plane electromagnetic wave, the directions of electric field and magnetic field are represented by $\hat{\mathrm{k}}$ and $...

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Q JEE MAIN 2019

An electromagnetic wave is represented by the electric field $\overrightarrow{\mathbf{E}}=\mathrm{E}_0 \hat{n} \sin [\omega t+(6 y-8 z)]$. Taking unit vectors in...

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Q JEE-MAIN 2019

A light wave is incident normally on a glass slab of refractive index 1.5. If 4% of light gets reflected...

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Q JEE MAIN_2019_

The electric field of a plane electromagnetic wave is given by $$ \overline{\mathrm{E}}=\mathrm{E}_0 \hat{\mathrm{i}} \cos (\mathrm{kz}) \cos (\omega \mathrm{t}) $$...

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Q JEE MAIN 2019

A plane electromagnetic wave having a frequency $v=23.9 \mathrm{GHz}$ propagates along the positive z-direction in free space. The peak value...

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Q JEE MAIN 2019

The mean intensity of radiation on the surface of the Sun is about $10^8 \mathrm{~W} / \mathrm{m}^2$. The rms value...

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Q JEE MAIN 2020

Suppose that intensity of a laser is $\left(\frac{315}{\pi}\right) \mathrm{W} / \mathrm{m}^2$. The rms electric field, in units of $...

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Q JEE MAIN 2020

For a plane electromagnetic wave, the magnetic field at a point x and time t is

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Q JEE MAIN 2019

An electromagnetic wave of intensity $50 \mathrm{Wm}^{-2}$ enters in a medium of refractive index ' $n$ ' without any loss....

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Q JEE Main 2019

If the magnetic field of a plane electromagnetic wave is given by (The speed of light $...

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Q JEE MAIN 2020

Choose the correct option relating wavelengths of different parts of electromagnetic wave spectrum

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Q JEE MAIN 2019

A 27 mW laser beam has a cross-sectional area of $10 \mathrm{~mm}^2$. The magnitude of the maximum electric field in...

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Q JEE MAIN 2020

The electric field of a plane electromagnetic wave is given by $\overrightarrow{\mathrm{E}}=\mathrm{E}_0(\hat{\mathrm{x}}+\hat{\mathrm{y}}) \sin (\mathrm{kz}-\omega \mathrm{t})$ Its magnetic field will be...

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Q JEE-MAIN 2020

The electric field of a plane electromagnetic wave propagating along the x direction in vacuum is $...

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Q JEE MAIN 2020

A plane electromagnetic wave is propagating along the direction $\frac{\hat{i}+\hat{j}}{\sqrt{2}}$, with its polarization along the direction $\hat{k}$. The correct form...

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Q JEE MAIN 2020

A plane electromagnetic wave of frequency 25 GHz is propagating in vacuum along the z-direction. At a particular point in...

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Q JEE MAIN 2019

The magnetic field of a plane electromagnetic wave is given by : $\overrightarrow{\mathrm{B}}=\overrightarrow{\mathrm{B}}_0 \hat{\mathrm{i}}\left[\cos (\mathrm{kz}-\omega \mathrm{t})+\mathrm{B}_1 \hat{\mathrm{j}} \cos (\mathrm{kz}+\omega \mathrm{t})\right.$...

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Q JEE MAIN 2021

The electric field in an electromagnetic wave is given by $\mathrm{E}=\left(50 \mathrm{NC}^{-1}\right) \sin \omega(\mathrm{t}-\mathrm{x} / \mathrm{c})$ The energy contained in...

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Q JEE MAIN 2021

https://competishun.com/emw_jee-main-31-08-2021_s1/

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Q JEE MAIN 2019

The electric field of a plane polarized electromagnetic wave in free space at time t = 0 is given by...

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Q JEE MAIN 2021

The magnetic field vector of an electromagnetic wave is given by $B=B \circ \frac{i+j}{\sqrt{2}} \cos (k z-\omega t)$; where $...

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Q JEE-MAIN 2021

A plane electromagnetic wave with frequency of 30 MHz travels in free space. At particular point in space and time,...

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Q JEE MAIN 2019

A plane electromagnetic wave travels in free space along the x-direction. The electric field component of the wave at a...

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Q JEE-MAIN 2021

A light beam is described by $E=800 \sin \omega\left(t-\frac{x}{c}\right)$. An electron is allowed to move normal to the propagation of...

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Q JEE MAIN 2019

The magnetic field of an electromagnetic wave is given by: $$ \vec{B}=1.6 \times 10^{-6} \cos \left(2 \times 10^7 z+6 \times...

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Q JEE MAIN 2021

In an electromagnetic wave the electric field vector and magnetic field vector are given as $\overrightarrow{\mathrm{E}}=\mathrm{E}_0 \hat{\mathrm{i}}$ and $\overrightarrow{\mathrm{B}}=\mathrm{B}_0$ respectively....

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Q JEE MAIN 2022

Identify the correct statements from the following descriptions of various properties of electromagnetic waves. A. In a plane electromagnetic wave...

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Q JEE Main 2019

A plane electromagnetic wave of frequency 50 MHz travels in free space along the positive x-direction. At a particular point...

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Q JEE MAIN 2021

An electromagnetic wave of frequency 3 GHz enters a dielectric medium of relative electric permittivity 2.25 from vacuum. The wavelength...

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Q JEE MAIN 2021

A plane electromagnetic wave of frequency 100 MHz is travelling in vacuum along the $x$-direction. At a particular point in...

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Q JEE MAIN 2021`

The peak electric field produced by the radiation coming from the 8 W bulb at a distance of 10 m...

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Q JEE MAIN 2021

For an electromagnetic wave travelling in free space, the relation between average energy densities due to electric $\left(U_e\right)$ and magnetic...

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Q JEE MAIN 2021

A radiation is emitted by 1000 W bulb and it generates an electric field and magnetic field at $P$, placed...

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Q JEE MAIN 2021

An electromagnetic wave of frequency 5 GHz , is travelling in a medium whose relative electric permittivity and relative magnetic...

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Q JEE MAIN 2021

plane electromagnetic wave of frequency 500 MHz is travelling in vacuum along y-direction. At a particular point in space and...

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Q JEE Main 2022_

As shown in the figure, after passing through the medium 1 . The speed of light $v_2$ in medium 2...

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Q JEE MAIN 2022

The oscillating magnetic field in a plane electromagnetic wave is given by $...

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Q JEE MAIN 2022

A beam of light travelling along $X$-axis is described by the electric field $E_y=900 \sin \omega(t-x / c)$. The ratio...

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Q JEE MAIN 2022

The magnetic field of a plane electromagnetic wave is given by $...

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Q JEE MAIN 2022

The displacement current of $4.425 \mu \mathrm{~A}$ is developed in the space between the plates of parallel plate capacitor when...

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Q JEE MAIN 2022

Given below are two statements: Statement I : A time varying electric field is a source of changing magnetic field...

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Q JEE MAIN 2022

The electromagnetic waves travel in a medium at a speed of $2.0 \times 10^8 \mathrm{~m} / \mathrm{s}$. The relative permeability...

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Q JEE_MAIN 2022

The intensity of the light from a bulb incident on a surface is $0.22 \mathrm{~W} / \mathrm{m}^2$. The amplitude of...

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Q JEE MAIN 2022

If electric field intensity of a uniform plane electro magnetic wave is given as $$ E=-301.6 \sin (k z-\omega t)...

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Q JEE MAIN 2022

A plane electromagnetic wave travels in a medium of relative permeability 1.61 and relative permittivity 6.44. If magnitude of magnetic...

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Q JEE MAIN 2022

An infinitely long hollow conducting cylinder with radius R carries a uniform current along its surface. Choose the correct representation...

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Q JEE MAIN 2022

The three charges q / 2, q and q / 2 are placed at the corners $A, B$ and $C$...

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Q JEE MAIN 2023

The electric field in an electromagnetic wave is given by $\mathrm{E}=56.5 \sin \omega(\mathrm{t}-\mathrm{x} / \mathrm{c}) \mathrm{NC}^{-1}$. Find the intensity of...

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Q JEE-Main_2024

A plane electromagnetic wave of frequency 35 MHz travels in free space along the X-direction. At a particular point (in...

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Q JEE MAIN 2024

If frequency of electromagnetic wave is 60MHz and it travels in air along z direction then the corresponding electric and...

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Q JEE MAIN 2024

Given below are two statements: Statement I: Electromagnetic waves carry energy as they travel through space and this energy is...

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Q JEE MAIN 2024

Match List I with List II

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Q JEE MAIN 2024

If the total energy transferred to a surface in time $t$ is $6.48 \times 10^5 \mathrm{~J}$, then the magnitude of...

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Q JEE MAIN 2023

The energy density associated with electric field $E$ and magnetic field $B$ of an electromagnetic wave in free space is...

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Q JEE MAIN_2025

A monochromatic light of frequency $5 \times 10^{14} \mathrm{~Hz}$ travelling through air, is incident on a medium of refractive index...

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Q JEE MAIN 2023

A message signal of frequency 3kHz is used to modulate a carrier signal of frequency 1.5 MHz. The bandwidth of...

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Q JEE MAIN 2023

In an electromagnetic wave, at an instant and at a particular position, the electric field is along the negative z-axis...

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Q JEE MAIN 2023

The amplitude of magnetic field in an electromagnetic wave propagating along y -axis is $6.0 \times 10^{-7} \mathrm{~T}$. The maximum...

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Q JEE MAIN 2023

Given below are two statements: Statement-I: For diamagnetic substance $-1 \leq \chi \leq 0$, where $\chi$ is the magneticsusceptibility. Statement-II:...

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Q JEE MAIN 2023

If $\vec{E}$ and $\vec{K}$ represent electric field and propagation vectors of the EM waves in vacuum, then magnetic field vector...

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Q JEE MAIN_2023

Given below are two statements: Statement I: Electromagnetic waves are not deflected by electric and magnetic field. Statement IIn: The...

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Q JEE MAIN_2023

The electric field and magnetic field components of an electromagnetic wave going through vacuum is described by $$ \begin{aligned} &...

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Q JEE MAIN 2023

The current required to be passed through a solenoid of 15 cm length and 60 turns in order to demagnetise...

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Q JEE MAIN 2023

The energy of an electromagnetic wave contained in a small volume oscillates with

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Q JEE MAIN 2023

Which of the following Maxwell’s equations is valid for time varying conditions but not valid for static conditions :

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Q JEE MAIN 2023

A carrier wave of amplitude 15V is modulated by a sinusoidal base band signal of amplitude 3V. The ratio of...

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Q JEE MAIN 2023

A TV transmitting antenna is 98 m high and the receiving antenna is at the ground level. If the radius...

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Q JEE MAIN 2023

For the plane electromagnetic wave given by $E=E_0 \sin (\omega t-k x)$ and $B=B_0 \sin (\omega t-k x)$, ), the...

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Q JEE MAINS 2024

In a plane EM wave, the electric field oscillates sinusoidally at a frequency of $5 \times 10^{10} \mathrm{~Hz}$ and an...

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Q JEE MAIN 2024

A plane EM wave is propagating along x direction. It has a wavelength of 4 mm. If electric field is...

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Q JEE MAIN

Electromagnetic waves travel in a medium with speed of $1.5 \times 10^8 \mathrm{~ms}^{-1}$ The relative permeability of the medium is...

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Q JEE MAIN 2024

An alternating voltage of amplitude 40 V and frequency 4kHz is applied directly across the capacitor of 12μF. The maximum...

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Q JEE MAIN 2024

The electric field in an electromagnetic wave is given by $\overrightarrow{\mathrm{E}}=\hat{\mathrm{i}} 40 \cos \omega\left(\mathrm{t}-\frac{\mathrm{z}}{\mathrm{c}}\right) \mathrm{NC}^{-1}$. The magnetic field induction of...

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Q JEE-Main_2024

The electric field of an electromagnetic wave in free space is represented as $\vec{E}=E_0 \cos (\omega t-k z) \hat{\imath}$. The...

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Q JEE MAIN 2024

Match List I with List II Chose the correct answer from the options given below

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Q JEE MAIN 2024

A plane electromagnetic wave propagating in x -direction is described by $...

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Q JEE MAIN 2025

The magnetic field of an E.M. wave is given by $\overrightarrow{\mathrm{B}}=\left(\frac{\sqrt{3}}{2} \hat{i}+\frac{1}{2} \hat{j}\right) 30 \sin \left[\omega\left(\mathrm{t}-\frac{Z}{\mathrm{c}}\right)\right]$ (S.I. Units). The corresponding...

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Q JEE MAIN 2025

Arrange the following in the ascending order of wavelength $(\lambda)$ : (A) Microwaves $\left(\mathrm{A}_{1}\right)$ (B) Ultraviolet rays $\left(\lambda_{2}\right)$ (C) Infrared...

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Q JEE MAIN 2025

If ${_0}$ denotes the permittivity of free space and ${\Phi _E}$ is the flux of the electric field through the...

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Q JEE MAIN 2025

A time varying potential difference is applied between the plates of a parallel plate capacitor of capacitance $2.5 \mu \mathrm{~F}$....

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Q JEE MAIN 2025

Due to presence of an em-wave whose electric component is given by $...

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Q JEE MAIN 2025

The electric field of an electromagnetic wave in free space is $...

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Q JEE MAIN 2025

A plane electromagnetic wave of frequency 20 MHz travels in free space along the +x direction. At a particular point...

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Q JEE MAIN 2025

A parallel plate capacitor of area $\mathrm{A}=16 \mathrm{~cm}^2$ and separation between the plates 10 cm is charged by a DC...

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Q JEE MAIN 2025

A small rigid spherical ball of mass M is dropped in a long vertical tube containing glycerine. The velocity of...

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