The maxwell's equation:

$\oint \overrightarrow{B}.\overrightarrow{dl}={\mu }_0\left(i+{\epsilon }_0.\frac{d{\varphi }_E}{dt}\right)$ is a statement of :

1.	Faraday's law of induction
2.	Modified Ampere's law
3.	Gauss's law of electricity
4.	Gauss's law of magnetism

If an electromagnetic wave of frequency f = 3 MHz passes from vacuum into a dielectric medium with relative permittivity K= 4.0, then:

A larger parallel plate capacitor, whose plates have an area of 1 $m^2$, separated from each other by 1 mm, is being charged at a rate of 25.8 V/s. If the plates have dielectric constant 10, then the displacement current at this instant is:

1. 25 $\mu A$

2. 11 $\mu A$

3. 2.2 $\mu A$

4. 1.1 $\mu A$

The most penetrating radiation out of the following is:
1. x-rays
2. β-rays
3. $\alpha$-rays
4. γ-rays

Which of the following statements is false regarding the properties of electromagnetic waves?

The speed of an electromagnetic wave in a medium of dielectric constant 2.25 and relative permeability 4 is approximately:

1. 1 x 10⁸ m/s

2. 2.5 x 10⁸ m/s

3. 3 x 10⁸ m/s

4. 2 x 10⁸ m/s

In an electromagnetic wave, energy density associated with a magnetic field will be:

1. $\frac{1}{2}L{I}^2$

2. $\frac{B^2}{2{\mu }_0}$

3. $\frac{1}{2}{\mu }_0{B}^2$

4. $\frac{1}{2}\frac{q}{B^2}$

The figure shows a parallel plate capacitor being charged by a battery. If X and Y are two closed curves then during charging, $\oint \overrightarrow{B}.d\overrightarrow{l}$ is zero along the curve:

A plane electromagnetic wave travels in free space along x-axis. At a particular point in space, the electric field along y-axis is 9.3 $V{m}^{-1}$. The magnetic induction is:

1. $3.1\times {10}^{-8}$ $T$

2. $3\times {10}^{-5}$ $T$

3. $3\times {10}^{-6}$ $T$

4. $9.3\times {10}^{-6}$ $T$

Light is a kind of wave. The wavelength of visible light ranges from about 4000 \(\overset{o}{A}\) to 7000 \(\overset{o}{A}\). Which of the following statements is false?