The frequency of a source of sound is 240Hz. How many times does it vibrate in two
minutes?
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Answer:
⬤Hence, the source vibrates 300,000 times in a 2 minute, producing a frequency of 240 Hz.
Explanation:
Frequency is defined as the number of oscillations per second. It is given by the relation:
Frequency = Number of Oscillations / Total Time
Number of oscillations = Frequency × Total time
➤Given, Frequency of sound = 240 Hz
➤Total time = 2 min = 60×60 = 120s
➤Number of oscillations/Vibrations = 250 × 1200 = 300,000
★Hence, the source vibrates 300,000 times in a 2 minute, producing a frequency of 240 Hz.
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