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MHT CET202120 Sep 2021Evening ShiftPhysicsWaves and SoundActual

The equation of wave is given by y=10 ( 2 t 30 + ) . If the displacement is 5 ~cm at t =0 , then the total phase angle at t =7.5 ~s will be

Options

  1. A3 rad
  2. B2 rad
  3. C2 5 rad
  4. D2 3 rad

Correct answer

D. 2 3 rad

Step-by-step solution

y =10 ( 2 t 30 + ) At t =0, y =5 ~cm 5=10 = 6 At t =7.5 , the total phase = 2 7.5 30 + = 2 + 6 = 2 3 rad

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