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MHT CET202124 Sep 2021Evening ShiftPhysicsWaves and SoundActual

The length and diameter of a metal wire used in sonometer is doubled. The fundamental frequency will change from ' n ' to

Options

  1. An 4
  2. Bn
  3. C2n
  4. Dn 2

Correct answer

A. n 4

Step-by-step solution

The fundamental frequency is given by n = 1 2 Cr T aligned & n 1 _ r & n ₂ n ₁ = ₁ r ₁ ₂ r ₂ = 1 2 1 2 = 1 4 aligned n ₂= n ₁ 4 = n 4

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