Object X vibrates 150 times in 5 seconds, while the frequency of object Y is 15 Hz. Which of the following statements is wrong?
(a) The frequency of object X is higher than that of Y.
(b) The sound produced by object Y is inaudible to the human ear.
(c) Both sounds are within the audible range of humans.
(d) The frequency of object X is 30 Hz.
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Answer:
ANSWER IS C
Explanation:
FREQUENCY OF Y IS 15 HZ WHICH IS INAUDIBLE TO HUMANS
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