Which of the following statements is true regarding infrasonic sound waves?

Question

Physics · Sound

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Their frequency is strictly less than 20 Hz.

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Answer 1

They cannot travel through air under standard atmospheric conditions.

Answer 2

Their frequency lies within the audible range of 20 Hz to 20 kHz.

Answer 3

Their frequency is strictly greater than 20 kHz.

Answer 4

Their frequency is strictly less than 20 Hz.

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