Sound waves of a frequency beyond the hearing range of the human ear a – McqOptions

MCQOPTIONS

1.	Sound waves of a frequency beyond the hearing range of the human ear are referred to as ultrasonic waves or vibrations, and the term embraces all vibrational waves of frequency greater than approximately:
A.	20 kHz
B.	2 MHz
C.	2 kHz
D.	200 kHz
Answer» B. 2 MHz

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