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Wave Motion

Ultrasonic so...

Question

Ultrasonic sounds are low-frequency waves.

A

True

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B

False

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Solution

The correct option is B
False

Ultrasonic sound is a high-frequency sound, exceeding the upper limit of human hearing – 20.000 cycles per second (20 KHz).

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Similar questions

Q. Sounds of frequencies below 20000 Hz are called ultrasonic sound.

Q. Assertion :Ultrasonic waves are longitudinal waves of frequency grater than

20, 000 H z

Reason: The maximum frequency of audible sound waves is

20, 000 H z

Q. Assertion :Ultrasonic waves are longitudinal waves of frequency greater than 20,000 Hz. Reason: The maximum frequency of audible sound waves is 20,000 Hz.

True or false?

(a) Frequency increases if amplitude is increased.

(b) A bat uses the principle of the radar system while flying at night.

(c) Ultrasonic sounds are produced in the sonar system.

Q. Sound waves with a frequency below 20 Hz are called
(a) infrasonic waves
(b) ultrasonic waves
(c) ultrasound
(d) none of these

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