MHT CET 2024 Physics question
A set of 28 turning forks is arranged in an increasing order frequencies. Each fork produces 'x' beats per second with the preceding fork and the last fork is octave of the first. If the frequency of the 12 fork is 152 Hz, the value of 'x' (no. of beats per second) is
Answer: (B)
Solution
Each fork differs from the previous one by Hz, so the frequencies form an arithmetic progression: . The last (28th) fork is an octave of the first: , hence . The 12th fork has $
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