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Electromagnetic Waves — Physics STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 SciencePhysicsElectromagnetic Waves1 Mark
Question
Two statements are given-one labelled Assertion (A) and the other labelled Reason (R). Select the correct answer to these questions from the codes (a), (b), (c) and (d) as given below.
  1. Both A and R are true and R is the correct explanation of A.
  2. Both A and R are true but R is not the correct explanation of A.
  3. A is true but R is false.
  4. A is false and R is also false.
Assertion: The electromagnetic waves are transverse in nature.
Reason: These waves propagate in straight lines.
✓

Answer

  1. Both A and R are true but R is not the correct explanation of A.
Explanation:
The electromagnetic waves consist of sinusoidally time varying electric and magnetic fields acting at right angles to each other as well as at right angles to the direction of propagation of waves i.e., electromagnetic waves are transverse in nature.

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