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Question 20181
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Electromagnetic Waves and Wave Optics: EM Waves — Nature MCQ

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EM Waves — NatureEasyQuestion 20181

Question

Electromagnetic waves are:
  1. A
    Longitudinal waves that need a medium
  2. B
    Transverse waves that can travel through vacuum
    Correct
  3. C
    Mechanical waves like sound
  4. D
    Scalar waves with no polarisation

Correct answer

Transverse waves that can travel through vacuum

Explanation

EM waves are transverse (E and B fields oscillate perpendicular to propagation and to each other) and require no medium — they travel through vacuum at c = 3×10⁸ m/s.

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