Doppler effect is not observed in  the sound wave. Choose one correct example from the given examples .   A. A marching band playing some note is stationary and you are moving away from it while traveling with a speed of 20 m/s.   B. A fire truck with siren on is moving away from you while traveling 50 mph . You are standing stationary in your driveway.   C. When you are standing stationary and a marching band is circling around you.   D. An ambulence with its siren on is moving towards you while traveling at 65mph. You are stationary.

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Doppler effect is not observed in  the sound wave. Choose one correct example from the given examples .

  A.

A marching band playing some note is stationary and you are moving away from it while traveling with a speed of 20 m/s.

  B.

A fire truck with siren on is moving away from you while traveling 50 mph . You are standing stationary in your driveway.

  C.

When you are standing stationary and a marching band is circling around you.

  D.

An ambulence with its siren on is moving towards you while traveling at 65mph. You are stationary.

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