JEE Physics ยท Medium

Sound Waves: Doppler Application MCQ

Solve this quality-checked JEE multiple-choice question, then review the correct answer and explanation.

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Doppler ApplicationMediumQuestion 31268

Question

Doppler ultrasound in medicine detects:
  1. A
    Location of organs only
  2. B
    Speed of blood flow via frequency shift of reflected ultrasound
    Correct
  3. C
    Temperature of tissues
  4. D
    Electrical activity

Correct answer

Speed of blood flow via frequency shift of reflected ultrasound

Explanation

Ultrasound reflects off moving red blood cells. Doppler shift in reflected frequency reveals blood velocity and direction.