In the case of electromagnetic waves,which of the following statements is incorrect?

  • A
    They are light waves.
  • B
    They can travel through vacuum.
  • C
    They are transverse waves.
  • D
    They are longitudinal waves.

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The electric field part of an electromagnetic wave in vacuum is
$E = 3.1 \, N C^{-1} \cos [ (1.8 \, rad \, m^{-1}) y + (5.4 \times 10^8 \, rad \, s^{-1}) t ] \hat{i}$
The wavelength of this part of the electromagnetic wave is ...... $m$.

The electric field of a plane electromagnetic wave is given by $\vec E = E_0 \hat i \cos(kz) \cos(\omega t)$. The corresponding magnetic field $\vec B$ is then given by:

Which one of the following statements is correct?

How are microwaves produced?

Electromagnetic waves are:

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