Question

a pandulam oscillates 40 seconds find its frequency ​

Answer 1

hey you here is your answer

A pendulum oscillates 40 times in 4 seconds. Find its time period and frequency. Given, pendulum oscillates 40 times in 4 seconds. The sound from a mosquito is produced when it vibrates its wings at an average rate of 500 vibrations per second.

so frequency= 0.25

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Answer 2

frequency=1/Time period

Therefore, frequency=0.25 Hz