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4 marksProperties of Waves

CAPE Physics Unit 1 · 2004 · Paper 2 · Question 6(b)

A tuning fork (440 Hz) is held above a uniform tube containing water (Figure 4). The air column's level can be changed. Sound intensity is enhanced when the air column is 0.6 m and again when it is 1 m.

Using these data, calculate a value for the speed of sound in air.

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Other parts of this question

  1. 6(a)(i)Explain what is meant by 'refraction of sound waves'.[8 marks]
  2. 6(a)(ii)Draw sketches to show the refraction of sound waves as the waves travel from cool air to warmer air and from warm air to cooler air.[1 mark]
  3. 6(a)(iii)Hence explain why sound waves are more audible at night than in the day.[1 mark]
  4. 6(c)(i)Calculate the amplitude of the wave at the chair on the perpendicular bisector (centre line) of the line between the speakers.[8 marks]
  5. 6(c)(ii)At what MINIMUM distance, D, to the right of this central chair is there a MAXIMUM in the sound intensity?[1 mark]

More practice: the rest of this paper · more Properties of Waves questions · all CAPE Physics Unit 1 past papers