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MHT CET202411 May 2024Morning ShiftPhysicsWaves and SoundActual

The frequency of two tuning forks A and B are respectively 1.4 % more and 2.6 % less than that of the tuning fork C . When A and B are sounded together, 10 beats are produced in 1 second. The frequency of tuning fork C is

Options

  1. A250 Hz
  2. B300 Hz
  3. C340 Hz
  4. D400 Hz

Correct answer

A. 250 Hz

Step-by-step solution

Let n be the frequency of fork C n _ A = n + 1.4 n 100 = 101.4 n 100 and n _ B = n - 2.6 n 100 = 97.4 n 100 But n _ A - n _ B =10 4 n 100 =10 n =250 ~Hz

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