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Physics · May / June 2021 · Paper 12 · Question 29

5054Sound

Students are asked for the uses of ultrasound. Three suggested uses for ultrasound are: P cleaning jewellery Q tanning on a sunbed R obtaining an image of an unborn baby. Which suggestions are correct?

  1. AP and Q only
  2. BP and R only
  3. CQ and R only
  4. DP, Q and R

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Correct answer: B. P and R only

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