Select the correct statement from the following:

  • A
    Electromagnetic waves cannot travel in vacuum.
  • B
    Electromagnetic waves are longitudinal waves.
  • C
    Electromagnetic waves are produced by charges moving with uniform velocity.
  • D
    Electromagnetic waves carry both energy and momentum as they propagate through space.

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$A$ plane electromagnetic wave of frequency $35 \ MHz$ travels in free space along the $X$-direction. At a particular point (in space and time) $\overrightarrow{E} = 9.6 \ \hat{j} \ V/m$. The value of the magnetic field at this point is:

In the given electromagnetic wave $E_y = 600 \sin (\omega t - kx) \ Vm^{-1}$,the intensity of the associated light beam is (in $W/m^2$); (Given $\epsilon_0 = 9 \times 10^{-12} \ C^2 N^{-1} m^{-2}$ and $c = 3 \times 10^8 \ m/s$)

Dimension of $\frac{1}{\mu_0 \varepsilon_0}$ should be equal to

The equation of a light wave,normally incident on a surface,is given by $B = (100 \text{ nT}) \sin(2\pi(10^{15}t - (3 \times 10^{-7})x) + \frac{\pi}{6})$. Find the intensity of light on that surface in $W/m^2$.

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The vectors $\vec{E}$ and $\vec{B}$ of an electromagnetic wave in vacuum are

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