An object vibrated with a frequency of 15 Hz. Which of the following i – McqOptions

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1.	An object vibrated with a frequency of 15 Hz. Which of the following is true?
A.	It produces sound which we can hear.
B.	It does not produce sound.
C.	It produces sound which we cannot hear.
D.	It produces sound which we can hear if we strain our ears.
Answer» D. It produces sound which we can hear if we strain our ears.

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