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JEE Main 2022 Physics question

PhysicsWavesJEE Main 2022

A set of 20 tuning forks is arranged in a series of increasing frequencies. If each fork gives 4 beats with respect to the preceding fork and the frequency of the last fork is twice the frequency of the first, then the frequency of last fork is Hz.

Answer: 152

Solution

Let the first frequency be . Then $ν _{20} = ν _{1} + 4 × 19 = ν

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Question ID VK-025219