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MHT CET202014 Oct 2020Evening ShiftPhysicsWaves and SoundActual

A transverse wave is travelling on a string with velocity 'V'. The extension in the string is ' x^ . If the string is extended by 50 % , the speed of the wave along the string will be nearly (Hooke's law is obeyed)

Options

  1. A(0.7) V
  2. B(1.22) V
  3. C(1.1) V
  4. D(0.9) V

Correct answer

B. (1.22) V

Step-by-step solution

Speed of sound V = T V T So V ₂ ~V ₁ = 1.5 x x So T x

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