Physics
Grade-8
Easy

Question

Animals like elephants communicate in _______ sounds.

  1. Infra
  2. Ultra
  3. Audible
  4. None

hintHint:

Below 20Hz of frequency = infrasound.

The correct answer is: Infra


    • Elephants communicate using very low frequency sounds.
    • Sounds with frequencies below 20Hz are called infrasound.
    • So, the correct option is a.

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