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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. A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion B Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion C Assertion is correct but Reason is incorrect D Assertion is incorrect but Reason is correct

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.

A

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

B

Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

C

Assertion is correct but Reason is incorrect

D

Assertion is incorrect but Reason is correct

 

Grade:8

2 Answers

Rituraj Tiwari
askIITians Faculty 1792 Points
2 years ago
dear student,
Ultrasonic waves are longitudinal waves of frequency greater than 20,000 Hz. This implies that a human being cannot hear beyong 20,000 Hz. i.e., the maximum frequency of audible sound is 20,000 Hz.
thank you
ankit singh
askIITians Faculty 614 Points
2 years ago
Ultrasonic waves are longitudinal waves of frequency greater than 20,000 Hz. This implies that a human being cannot hear beyong 20,000 Hz. i.e., the maximum frequency of audible sound is 20,000 Hz.

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