Question

please help me in solving this question.....find the frequency of last fork​

Answer 1

Answer:

99 Hz

Explanation:

Let the frequency of 1st tuning fork = f

Frequency of last turning fork = f/2

Also each tuning fork gives 3 beats with the next.

f - (25 x 3) = f/2

Solving, we get f = 150 Hz

So the frequency of 1st fork = 150 Hz

Frequency of 18th fork will be,

f(18) = f - 17 x 3 = 150 - 17 x 3 = 99 Hz

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