Electromagnetic Waves PYQs - Last 5 Years

AP EAPCET / Physics / Electromagnetism / 38 recent questions

PhysicsElectromagnetism2021-2025

All Electromagnetic Waves PYQs Last 10 Years Create chapter test

Practice 38 AP EAPCET Physics questions from Electromagnetic Waves. Use the year-wise and type-wise breakdown to prioritize recent PYQs, then continue into the question list below.

38

PYQs on Page

Physics / Electromagnetism

2021-2025

Year Range

Based on indexed question metadata

38

Last 5 Years

2021-2025

38

Last 10 Years

2016-2025

Recent Year Trend

2021

2022

2023

2024

2025

202112 max PYQs/year2025

Question Types

38PYQs

MCQ100%

Difficulty Mix

#1 Unknown38

38 in last 5 years38 in last 10 years

Last 5 Years Electromagnetic Waves Questions

Showing 38 of 38 filtered questions.

1Electromagnetic Waves

If $11 \%$ of the power of a 200 W bulb is converted to visible radiation, then the intensity of the light at a distance of 100 cm from the bulb is

2Electromagnetic Waves

If the magnetic field in a plane progressive wave is represented by the equation $B_y=2 \times 10^{-7} \sin \left(0.5 \times 10^3 x+1.5 \pi \times 10^{11} t\right) \mathrm{T}$, then the frequency of the wave is
(In the equation time $t$ is ...

3Electromagnetic Waves

The layer of the atmosphere that reflects low frequency (LF) electromagnetic waves during day time only is

4Electromagnetic Waves

If a 10 W bulb emits electromagnetic waves uniformly in all directions, then the intensity of light at a distance 0.5 m from the source is nearly

5Electromagnetic Waves

The oscillating electric and magnetic field vectors of an electromagnetic wave are along

6Electromagnetic Waves

The ratio of the magnitudes of the electric field and $10^8$ times the magnetic field of a plane electromagnetic wave is

7Electromagnetic Waves

The waves having maximum wavelength among the following electromagnetic waves is

8Electromagnetic Waves

The magnitude of the electric field of a plane electromagnetic wave travelling in free space is $E$. If $\mu_0$ and $\varepsilon_0$ are respectively permeability and permittivity of the free space, then the magnitude of magnetic field of th...

9Electromagnetic Waves

If the rms value of the electric field of electromagnetic waves at a distance of 3 m from a point source is $3 \mathrm{NC}^{-1}$, then the power of the source is

10Electromagnetic Waves

A plane electromagnetic wave of frequency 25 MHz propagates in vacuum along positive $x$-direction. At a particular point in space and time, if the electric field is $63 \hat{\mathrm{j}} \mathrm{Vm}^{-1}$, then the magnitude of the magnetic...

11Electromagnetic Waves

In a plane electromagnetic wave, the magnetic field is given by $\mathbf{B}=3 \times 10^{-7} \sin \left(100 \pi x+10^{12} t\right) \mathrm{T}$, then the wavelength of the wave is
(In the equation $x$ is in metre and $t$ is in second)

12Electromagnetic Waves

If the magnetic field inside a solenoid is $B$, then the magnetic energy stored in it per unit volume is ( $c=$ speed of light in vacuum and $\varepsilon_0$ is permittivity of free space)

13Electromagnetic Waves

Size of the antenna for a carrier wave of frequency 3 MHz is

14Electromagnetic Waves

For plane electromagnetic waves propagating in the positive $z$-direction. The combination which gives the correct possible direction for $\mathbf{E}$ and $\mathbf{B}$ fields respectively is

15Electromagnetic Waves

The structure of solids is investigated by using

16Electromagnetic Waves

The radiation of energy $E$ falls normally on a perfectly reflecting surface. The momentum transferred to the surface is

17Electromagnetic Waves

Which of the following produces electromagnetic waves?

18Electromagnetic Waves

The rms value of the electric field of an electromagnetic wave emitted by a source is $660 \mathrm{NC}^{-1}$. The average energy density of the electromagnetic wave is

19Electromagnetic Waves

A transmitter of power 10 kW emits radio waves of wavelength 500 m . The number of photons emitted por second by the transmitter of the order of

20Electromagnetic Waves

The average value of electric energy density in an electromagnetic wave is where $E_0$ is peak value

21Electromagnetic Waves

A message signal of 3 kHz is used to modulate a carric signal frequency 1 MHz , using amplitude modulation. The upper side band frequency and band width respectively are

22Electromagnetic Waves

An electromagnetic wave travel in a medium with a speed of $2 \times 10^8 \mathrm{~ms}^{-1}$. The relative permeability of the medium is 1 . Then, the relative permittivity is

23Electromagnetic Waves

The solar radiation is

24Electromagnetic Waves

The average power output of a point source of an electromagnetic radiation is 1080 W . The maximum value of the rms value of the electric field at a distance of 3 m from the source is

25Electromagnetic Waves

The device used to detect infrared radiations is

26Electromagnetic Waves

The relation between permittivity of free space, the permeability of free space and speed of light is

27Electromagnetic Waves

Frequencies in the UHF range normally propagate by means of

28Electromagnetic Waves

The magnetic field in a plane electromagnetic wave is given as
\(\mathbf{B}=\left(3 \times 10^{-7} \mathrm{~T}\right) \sin \left(3 \times 10^4 x+9 \times 10^{12} t\right) \hat{j}\)
The electric field of this wave is given as

29Electromagnetic Waves

A plane electromagnetic wave travels in free space along \(Z\)-axis. At a particular point in space, the electric field along \(X\)-axis is \(8.7 \mathrm{~Vm}^{-1}\). The magnetic field along \(Y\)-axis is

30Electromagnetic Waves

A beam of light with intensity \(10^{-3} \mathrm{~Nm}^{-2}\) and cross-sectional area \(20 \mathrm{~cm}^2\) is incident on a fully reflective surface at angle \(45^{\circ}\). Then, the force exerted by the beam on the surface is

31Electromagnetic Waves

The maximum number of TV signals, that can be transmitted along a co-axial cable is

32Electromagnetic Waves

If the average power per unit area delivered by an electromagnetic wave is \(9240 \mathrm{~Wm}^{-2}\). then the amplitude of the oscillating magnetic field in EM wave is

33Electromagnetic Waves

The electric field \((E)\) and magnetic field \((B)\) of an electromagnetic wave passing through vacuum are given by
$$\begin{aligned} & E=E_0 \sin (k x-\omega t) \\ & B=B_0 \sin (k x-\omega t) \end{aligned}$$
Then the correct statement amo...

34Electromagnetic Waves

A carrier wave is used to transmit a message signal. If the peak voltage of modulating signal and carrier signal are increased by \(1 \%\) and \(3 \%\) respectively, the modulation index is changed by

35Electromagnetic Waves

A light of intensity \(12 \mathrm{Wm}^{-2}\) incidents on a black surface of area \(4 \mathrm{~cm}^2\). The radiation pressure on the surface is

36Electromagnetic Waves

The electric and the magnetic fields associated with an electromagnetic wave propagating along the \(z\)-axis, can be represented by

37Electromagnetic Waves

In an amplitude modulated signal, the maximum amplitude is \(15 \mathrm{~V}\) and minimum amplitude is \(5 \mathrm{~V}\). The amplitude of modulating wave will be

38Electromagnetic Waves

The magnetic field of a plane electromagnetic wave is given by \(B=(400 \propto \mathrm{T})\sin \left[\left(4.0 \times 10^{15} \mathrm{~s}^{-1}\right)\left(t-\frac{x}{c}\right)\right]\). Average energy density corresponding to the electric ...