Which kind of sound is produced in an earthquake before the main shock wave begins?

Ultrasound

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Infra sound

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Audible sound

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One of the above

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Solution

The correct option is B Infra sound
Infrasonic waves are waves whose frequency is below 20Hz.These sounds are not heard by human ears. Audible sounds are between 20Hz and 20,000Hz

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Similar questions

Q. Which kind of sound is produced in an earthquake before the main shock wave begins ?
(a) ultrasound
(b) infrasound
(c) audible sound
(d) none of the above

An earthquake produces which type of sound wave before the main shock wave begins?

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

Three different vibrating bodies produce three types of sounds X, Y and Z. Sounds X and Y cannot be heared by a man having normal range of hearing but sound Z can be heard easily. The sound X is used in for monitoring nuclear reactor.Y is sound similar to that which is produced during an earthquake before the main shock wave is generated. What type of sounds are (i) X (ii) Y, and (iii) Z?

Q. Three different vibrating objects produce three types of sounds X, Y and Z.
Sounds X and Y cannot be heard by a man having normal range of hearing but sound Z can be heard easily.
The sound X is used for echocardiography.The sound similar to that which is produced during an earthquake before the main shock wave is generated.
Name one device in a science laboratory which can produce sound like Y.

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Which kind of sound is produced in an earthquake before the main shock wave begins?

The correct option is B Infra soundInfrasonic waves are waves whose frequency is below 20Hz.These sounds are not heard by human ears. Audible sounds are between 20Hz and 20,000Hz

The correct option is B Infra sound
Infrasonic waves are waves whose frequency is below 20Hz.These sounds are not heard by human ears. Audible sounds are between 20Hz and 20,000Hz