Select Chapter Topics:
Q. No.The conduction current is same as displacement current when source is :
1. AC only
2. DC only
3. Both AC and DC
4. neither AC nor DC
Subtopic: Â Displacement Current |
 53%
Level 3: 35%-60%
Please attempt this question first.
Hints
Please attempt this question first.
An incident light beam of power \(P\) falls on a flat surface; at an angle of incidence of \(60^{\circ}.\) \(50\%\) of the of the beam is absorbed and the remaining reflected. The force exerted on the surface is:
1. \(\dfrac{P}{c}\)
2. \(\dfrac{P}{2c}\)
3. \(\dfrac{\sqrt3P}{c}\)
4. \(\dfrac{\sqrt3P}{2c}\)
1. \(\dfrac{P}{c}\)
2. \(\dfrac{P}{2c}\)
3. \(\dfrac{\sqrt3P}{c}\)
4. \(\dfrac{\sqrt3P}{2c}\)
Subtopic: Â Properties of EM Waves |
Level 3: 35%-60%
Hints
In a plane polarised electromagnetic wave of wavelength \(\lambda,\) the electric field at a certain point \(P\) has the value \(\vec E_P(t).\) At a different point \(Q,\) the electric field is \(\vec E_Q(t).\) If \(\vec E_{P}\) and \(\vec E_{Q}\) are in phase with each other, then the component of \(\overrightarrow {PQ}\) along the direction of propagation equals:
| 1. | Zero |
| 2. | \(\lambda\) |
| 3. | \(n\lambda,\) where \(n\) is an integer |
| 4. | \(2n\lambda,\) where \(n\) is an integer |
Subtopic: Â Properties of EM Waves |
 52%
Level 3: 35%-60%
Hints
An electromagnetic wave is moving along negative \(z (-z)\) direction and at any instant of time, at a point, its electric field vector is \(3\hat j~\text{V/m}\). The corresponding magnetic field at that point and instant will be: (Take \(c=3\times10^{8}~\text{ms}^{-1}\))
| 1. | \(10\hat i~\text{nT}\) | 2. | \(-10\hat i~\text{nT}\) |
| 3. | \(\hat i~\text{nT}\) | 4. | \(-\hat i~\text{nT}\) |
Subtopic: Â Properties of EM Waves |
 57%
Level 3: 35%-60%
NEET - 2022
Hints
Given below are two statements:
| Statement I: | Electromagnetic waves propagate through all media with a speed \(c=\dfrac{1}{\sqrt{\varepsilon_0\mu_0}}.\) |
| Statement II: | Electromagnetic waves can undergo reflection and refraction. |
| 1. | Statement I is incorrect and Statement II is correct. |
| 2. | Both Statement I and Statement II are correct. |
| 3. | Both Statement I and Statement II are incorrect. |
| 4. | Statement I is correct and Statement II is incorrect. |
Subtopic: Â Properties of EM Waves |
 57%
Level 3: 35%-60%
Hints
Unlock IMPORTANT QUESTION
This question was bookmarked by 5 NEET 2025 toppers during their NEETprep journey. Get Target Batch to see this question.
✨ Perfect for quick revision & accuracy boost
Buy Target Batch
Access all premium questions instantly
A plane electromagnetic wave is given by its electric field: \(\vec {E}=\vec {E_0}\cos\dfrac{\omega}{c}(ct-\beta x)\)
where \(\omega\) and \(\beta\) are constants, \(t\) is the time and \(x\) represents the \(x\text-\)coordinate. \(c\) is the speed of the light in vacuum.
The value of \(\beta,\)
where \(\omega\) and \(\beta\) are constants, \(t\) is the time and \(x\) represents the \(x\text-\)coordinate. \(c\) is the speed of the light in vacuum.
The value of \(\beta,\)
| 1. | cannot be less than \(1\). |
| 2. | equals \(1\), always. |
| 3. | cannot be greater than \(1\). |
| 4. | can be any non-zero value. |
Subtopic: Â Properties of EM Waves |
Level 3: 35%-60%
Hints
Electromagnetic waveform given by the electric field: \(\vec E=E_0[\hat{i}+\hat{j}\cos(\omega t-kx)]\) is established in space.
The magnetic field associated with the wave has the amplitude:
The magnetic field associated with the wave has the amplitude:
| 1. | \(\dfrac{E_0}{c}\) | 2. | \(\dfrac{2E_0}{c}\) |
| 3. | \(\dfrac{\sqrt2E_0}{c}\) | 4. | zero |
Subtopic: Â Properties of EM Waves |
 58%
Level 3: 35%-60%
Hints
The magnetic field of a plane electromagnetic wave
is given by,
\(\vec B=3\times10^{-8}\text{cos}(1.6\times10^3x+48\times10^{10}t)\hat j~\text{T}.\)
The associated electric field will be:
is given by,
\(\vec B=3\times10^{-8}\text{cos}(1.6\times10^3x+48\times10^{10}t)\hat j~\text{T}.\)
The associated electric field will be:
| 1. | \(3 \times 10^{-8} \cos\left(1.6 \times 10^3 x+48 \times 10^{10} t\right) \hat{i}~\text{ V/m} \) |
| 2. | \(3 \times 10^{-8} \text{sin} \left(1.6 \times 10^3 {x}+48 \times 10^{10} {t}\right) \hat{{i}}~ \text{V} / \text{m} \) |
| 3. | \(9 \sin \left(1.6 \times 10^3 {x}-48 \times 10^{10} {t}\right) \hat{{k}} ~~\text{V} / \text{m} \) |
| 4. | \(9 \cos \left(1.6 \times 10^3 {x}+48 \times 10^{10} {t}\right) \hat{{k}}~~\text{V} / \text{m} \) |
Subtopic: Â Properties of EM Waves |
 62%
Level 2: 60%+
NEET - 2022
Hints
An electromagnetic waveform which has an electric field given by:
\(\vec{E}=E_{0}[\hat{\imath} \cos (\omega t-k z)+\hat{\jmath} \cos (\omega t-k x)]\) and the waveform propagates. The maximum electric field has the magnitude:
\(\vec{E}=E_{0}[\hat{\imath} \cos (\omega t-k z)+\hat{\jmath} \cos (\omega t-k x)]\) and the waveform propagates. The maximum electric field has the magnitude:
| 1. | \(\dfrac {E_0} { \sqrt 2}\) | 2. | \(\sqrt 2~ E_0\) |
| 3. | \(E_o\) | 4. | \(2E_o\) |
Subtopic: Â Properties of EM Waves |
 57%
Level 3: 35%-60%
Hints
A positively charged particle is placed on the \(x\text-\)axis in the path of an electromagnetic wave propagating along the \(x\text-\)axis, with its electric field oscillating along the \(y\text-\)axis. The charged particle will begin to move along:
| 1. | the electric field. |
| 2. | the magnetic field. |
| 3. | the direction of propagation. |
| 4. | the direction between the electric field and the magnetic field. |
Subtopic: Â Properties of EM Waves |
Level 3: 35%-60%
Hints
Select Chapter Topics:
© 2026 GoodEd Technologies Pvt. Ltd.