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JEE Main20202 Sep 2020Morning ShiftPhysicsWaves and SoundActual

Two identical strings X and Z made of same material have tension T X and T Z in then if their fundamental frequencies are 450 Hz and 300 Hz , respectively, then the ratio T X / T Z is :

Options

  1. A2 . 25
  2. B0 . 44
  3. C1 . 25
  4. D1 . 5

Correct answer

A. 2 . 25

Step-by-step solution

f X = 1 2 ℓ T X μ f Z = 1 2 ℓ T Z μ f X f Z = 450 300 = T X T Z ⇒ T X / T Z = 9 / 4 = 2 . 25

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