Question

The frequency of a source of sound is 300 hz find the number of times it vibrates in 2 min

Answer 1

no. of times it vibrates in 1 second=300

therefore, no. of times it vibrates in 2 minutes (120 seconds)=

$300 \times 120 = 36000$

Answer 2

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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 = 300 Hz

Total time = 1 min = 60 ×2 =120s

Number of oscillations/Vibrations = 300 × 120 = 36000

Hence, the source vibrates 36000 times in a minute, producing a frequency of 300 Hz.

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