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MHT CET202526 Apr 2025Morning ShiftPhysicsWaves and SoundActual

In Sonometer experiment, the frequency of a tuning fork used is 288 Hz . Harmonics will 'NOT' be produced at the frequency

Options

  1. A288 Hz
  2. B576 Hz
  3. C844 Hz
  4. D864 Hz

Correct answer

C. 844 Hz

Step-by-step solution

The tuning fork frequency is f = 288~ Hz , which corresponds to the sonometer string's fundamental frequency. Harmonics occur at integer multiples of the fundamental: f_n = n 288~ Hz for n = 1, 2, 3, . Calculating the first few harmonics: f₁ = 288~ Hz (fundamental) f₂ = 576~ Hz f₃ = 864~ Hz f₄ = 1152~ Hz Among the options, 844~ Hz is not a harmonic since 844 / 288 2.93 is not an integer. The frequency that will not be produced is C .

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