Multiple choice

Which of the following statements about sound is / are incorrect?

  1. Sound needs a medium to travel.

  2. Sound is produced by vibrating objects.

  3. Speed of sound is maximum in gases, and least in solids.

  4. Sound of frequency below audible range is called infrasonic sound.

  5. Excessive sound in the environment causes noise pollution.
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Speed of sound is maximum in solids, and least in gases.

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