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MHT CET202016 Oct 2020Morning ShiftPhysicsWaves and SoundActual

Two identical strings of length ' ' and '2 ' vibrate with fundamental frequencies 'N' hertz and '1:5 N' hertz, respectively. The ratio of tensions for smaller length to larger length is

Options

  1. A9:1
  2. B3:1
  3. C1:9
  4. D1:3

Correct answer

C. 1:9

Step-by-step solution

N = 1 2 T ₁ ~m 1.5 ~N = 1 4 T ₂ ~m T ₁ ~T ₂ = N 2 1.5 ~N 4 = 1 3 T ₁ ~T ₂ = 1 9

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