Which of the following sounds can be heard by us?
(1) Sound of a pendulum making 15 oscillations
every second
(2) Sound of a string vibrating 50 times in 5 seconds.
(3) Sound of our heart beating 75 times every minute
(4) Sound of a body vibrating 75 times every second
Answers
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Answer:
Answer:sound of a string vibrating 50 times in 5 seconds. ... (1) Sound of a pendulum making 15 oscillations in every second (2) ... seconds ( 3) Sound of our heart beating 75 times in every minute
Answered by
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Answer:
4) Sound of a body vibrating 75 times every second
Explanation:
Because we can hear only 20 - 20000. Hz frequency
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