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NEET2019PhysicsWaves and SoundActual

A string wave equation is given y=0.002 (300 t-15 x) and mass density is =0.1 ~kg ~m ⁻¹ . Then find the tension in the string.

Options

  1. A30 ~N
  2. B20 ~N
  3. C40 ~N
  4. D45 ~N

Correct answer

C. 40 ~N

Step-by-step solution

In string, wave speed is v= T / aligned & v= k = 300 15 =20 ~m ~s ⁻¹ & T= v^2=0.1 20 20=40 ~N aligned

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