Question 2 :
According to Maxwell's equation, the velocity of light in any medium is expressed as
Question 5 :
A plane electromagnetic wave of wavelength $\lambda$ has an intensity $I$. It is propagating along the positive $Y-direction$. The allowed expressions for the electric and magnetic fields are given by
Question 6 :
Instantaneous displacement current $1A$ in the space between the parallel plates of $1\mu F$ capacitor can be established by changing the potential difference at the rate of:<br/>
Question 7 :
Assertion: When variable frequency AC source is connected to a capacitor, displacement current increases with increase in frequency
Reason: As frequency increases conduction current also increases
Question 8 :
A metal block is exposed to beams of X-ray of different wavelength. X-rays of which wavelength penetrate most?
Question 10 :
According to Maxwell's hypothesis, a changing electric field gives rise to
Question 12 :
Choose the correct answer from the alternatives given.<br>Displacement current goes through the gap between the plates of a capacitor when the charge of the capacitor<br>
Question 13 :
An  AM radio wave is emitted by a radio antenna and travels across flat ground. Find out the direction of the magnetic field component of the wave?
Question 14 :
The frequency of electromagnetic wave in free space is $2$ MHz. When it passes through a region of relative permittivity $\varepsilon_r=4.0$, then its wave length __________ & frequency ______________.
Question 15 :
If the directions of electric and magnetic field vectors of a plane electromagnetic wave are along positive $y$-direction and positive $z$-direction respectively, then the direction of propagation of the wave is along:
Question 16 :
Choose the correct answer from the alternatives given.<br>The conduction current is the same as displacement current when the source is<br>
Question 18 :
Which of the following is the right derivation for Ampere-Maxwell law?
Question 19 :
The propagation constant of a photon of wavelength $6284 \ A^o$ 
Question 20 :
Which wave characteristic describes the product of the frequency and the wavelength?
Question 21 :
viA charged particle oscillates about its mean equilibrium position with a frequency of ${10}^{9}Hz$. The electromagnetic waves produced:
Question 22 :
A radiation of energy E falls normally on a perfectly reflecting surface. The momentum transferred to the surface is:
Question 23 :
One requires 11eV of energy to dissociate of carbon monoxide molecule into carbon and oxygen atoms. The minimum frequency of the appropriate electromagnetic radiation to achieve the dissociation lies in:
Question 24 :
A $1000\Omega $ resistance and a capacitor of $100\Omega $ resistance are connected in series a $220 V$ source. when the capacitor is 50% charged, the value of the displacement current is.
Question 25 :
The Sun delivers ${{10}^{3}}W/{{m}^{2}}$ of electromagnetic flux to the Earth's surface. The radiation force on the roof of dimensions $8m\times 20m$ will be:
Question 26 :
The electric field for an electromagnetic wave in free space is $\vec{E}=\vec{i}30\cos(kz-5\times 10^8t)$, where magnitude of $\vec E$ is in $V/m$. The magnitude of wave vector, $k$ is:(velocity of em wave in free space $=3\times 10^8m/s$)
Question 27 :
Theratio of contributions made by the electric field and magnetic field componentsto the intensity of an electromagnetic wave is:
Question 28 :
According to Maxwell's hypothesis, changing of electric filed give rise to
Question 29 :
A monochromatic light of wavelength 589 nm is incident from air onto water surface. The refractive index of water is 1.33. What is the wavelength and speed of refracted light?
Question 30 :
A charged particle oscillates about its mean equilibrium position with a frequency of ${10}^{9}$ Hz. The frequency of electromagnetic waves produced by the oscillator is
Question 31 :
In an electromagnetic wave, the electric and magnetic fields are $100 Vm ^{-1}$and $0.265 Am$ maximum energy flow is
Question 32 :
The electric fields of two plane electromagnetic plane waves in vacuum are given by<br/>$\vec{E_1}=E_0\hat{j}\cos(\omega t-kx)$ and $\vec{E_2}=E_0\hat{k}\cos(\omega t-ky)$<br/>At $t=0$, a particle of charge q is at origin with a velocity $\vec{v}=0.8c\hat{j}$ (c is the speed of light in vaccum). The instantaneous force experienced by the particle is:<br/>
Question 33 :
A plane e.m wave of frequency $30MHz$ travels in free space along the x-direction. The electric field component of the wave at a particular point of space and time $E=6V/m$ along $y$-direction. Its magnetic field component $B$ at this point would be
Question 34 :
If $\vec{E}$ and $\vec{B}$ are the electric and magnetic field vectors of electromagnetic waves, then the direction of propagation of the electromagnetic wave is along the direction of<br>
Question 35 :
A plane EM wave travelling alone z-direction is described by ${ \overrightarrow { E } \  =\  { E }_{ 0 } }\sin { (kz\  -\  \omega t)\hat{ i } }$ and ${\vec B\  =\  { B }_{ 0 } }\sin { (kz\  -\  \omega t)\hat{ j } }$.
