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MHT CET 2023 (12 May, Shift 1) · Beats

Beats question from MHT CET 2023 (12 May, Shift 1)

Q39MHT CET 2023 · 12 MAY · SHIFT 1Easy

Beats

41 tuning forks are arranged in increasing order of frequency such that each produces 5 beats/second with next tuning fork. If frequency of last tuning fork is double that of frequency of first fork. Then frequency of first and last fork is

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Answer: (b)

Last (41st) fork $= f + 40 \times 5 = f + 200$
$f + 200 = 2f \Rightarrow f = 200\text{ Hz}$ , last $= 400\text{ Hz}$
So the answer is (b) $200,\ 400\text{ Hz}$ .

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