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The length of a sonometer wire tuned to a frequency of 250 H z is 0.60 m . The frequency of tuning fork with which the vibrating wire will be in tune when the length is made 0.40 m is

Options

  1. A250 H z
  2. B375 H z
  3. C56 H z
  4. D384 H z

Correct answer

B. 375 H z

Step-by-step solution

n 1 L 1 = n 2 L 2 ⇒ 250 × 0.6 = n 2 × 0.4 ⇒ n 2 = 375 ⇒   n 2 = 375   H z

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