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
Correct option is B)