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Doctors Medicines MCQs Q&A

  1. 1, 2, 3 and 4
  2. 1, 2 and 4 only
  3. 2 and 3 only
  4. 3 and 4 only
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1 Answers

Option 3 : 2 and 3 only

CONCEPT:

  • Electromagnetic waves or EM waves: The waves that are formed as a result of vibrations between an electric field and a magnetic field and they are perpendicular to each other and to the direction of the wave is called an electromagnetic wave.
  • The accelerating charged particle produces an electromagnetic (EM) wave.
  • A charged particle oscillating about an equilibrium position is an accelerating charged particle.
  • Electromagnetic waves do not require any matter to propagate from one place to another as it consists of photons. They can move in a vacuum.

Properties of electromagnetic waves:

  • Not have any charge or we can say that they are neutral.
  • Propagate as a transverse wave.
  • They move with the velocity the same as that of light i.e 3 × 108 m/s.
  • It contains energy and they also contain momentum.
  • They can travel in a vacuum also.

EXPLANATION:

  • From the above discussion, they can travel in a vacuum and they have electric and magnetic components that are mutually perpendicular. options 2 and 3 are correct.
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