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3 marksProperties of Waves

CAPE Physics Unit 1 · 2017 · Paper 2 · Question 5(b)(ii)

The points marked X are points of minima between the wall and the speaker.

Determine the frequency setting of the signal generator.

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Other parts of this question

  1. 5(a)(i)Distinguish between the terms 'threshold of hearing' and 'threshold of pain' when applied to the intensity of sound.[2 marks]
  2. 5(a)(ii)What TWO properties of the human ear makes the decibel (dB) scale particularly useful?[2 marks]
  3. 5(a)(iii)Determine the intensity of such a sound in W m⁻².[6 marks]
  4. 5(b)(i)Explain why there are positions between the speaker and the wall where intensity is a minimum, and why these minima do NOT actually have zero intensity.[2 marks]

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