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Subject - Physics:

Basics

MCQ - 184-10651

Question:

The periodic alternation of sound between maximum and minimum loudness are called

  1. silence zone
  2. interference
  3. beats
  4. interference

Correct Answer: C

Explanation:

When two sound waves of different frequency approach your ear, the alternating constructive and destructive interference causes the sound to be alternatively soft and loud - a phenomenon which is called "beating" or producing beats.

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