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Physics · May / June 2016 · Paper 11 · Question 26

5054Sound

An intruder alarm is adjusted to give a quieter sound without affecting the pitch of the note. How are the amplitude and the frequency of the sound affected?

  1. Alower lower
  2. Blower same
  3. Csame lower
  4. Dsame same

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Correct answer: B. lower same

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