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Instinct, Tagging, Conditioning and Imitating

What are infr...

Question

What are infrasounds and ultrasounds? [2 MARKS]

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Solution

Individual Definitions : 1 Mark each

Sounds of frequencies below 20 Hz are called infrasonic sound or infrasound.

Frequencies higher than 20 kHz are called ultrasonic sound or ultrasound.

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Q. Which of the following correctly represents the increasing order of frequency for infrasound, ultrasound, and audible sound?

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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