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MHT CET 2026 (19 May, Shift 2) · Beats

Beats question from MHT CET 2026 (19 May, Shift 2)

Q5MHT CET 2026 · 19 MAY · SHIFT 2Easy

Beats

A set of $8$ tuning forks is arranged in ascending order of frequencies. Each fork produces $4$ beats with the next one and frequency of last fork is octave of first. The frequency of $5$ th fork is

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Answer: (c)

Fork frequencies: $f, f+4, \dots$ ; last (8th) $= f + 7 \times 4 = f + 28$
Octave: $f + 28 = 2f \Rightarrow f = 28\text{ Hz}$
5th fork $= 28 + 4 \times 4 = 44\text{ Hz}$
So the answer is (c) $44$ Hz.

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