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Infrasonic Sound

Earthquake pr...

Question

Question 7
Earthquake produces which kind of sound before the main shock wave begins

(a) ultrasound
(b) infrasound
(c) audible sound
(d) none of the above

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Solution

(b) infrasound

Earthquake produces infrasound before the main shock wave begins. Infrasound is sound below 20 Hz, lower than humans can perceive.

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Q. Question 7
Earthquake produces which kind of sound before the main shock wave begins

(a) ultrasound
(b) infrasound
(c) audible sound
(d) none of the above

Q. Question 7
Earthquake produces which kind of sound before the main shock wave begins

(a) ultrasound
(b) infrasound
(c) audible sound
(d) none of the above

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Infrasonic Sound

Standard IX Physics

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