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MHT CET202122 Sep 2021Evening ShiftPhysicsWaves and SoundActual

A sound wave of frequency 160 ~Hz has velocity of 320 ~m / s . when it travels through air, the particles having a phase difference of 90^ , are separated by a distance of

Options

  1. A50 cm
  2. B1 cm
  3. C25 cm
  4. D75 cm

Correct answer

A. 50 cm

Step-by-step solution

aligned & f =160 ~Hz , v =320 ~m / s & = v f = 320 160 =2 ~m =200 ~cm aligned Phase difference = 2 x aligned & x = 2 & = 2 2 [ = 2 ] & = 4 = 200 4 =50 ~cm aligned

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