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Grade: 8

                        

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

 

5 months ago

Answers : (2)

Rituraj Tiwari
askIITians Faculty
1790 Points
							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
5 months ago
ankit singh
askIITians Faculty
614 Points
							
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.
5 months ago
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