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2 marksSound

CSEC Physics · 1993 · Paper 2 · Question 4(iv)

To detect a distant object, the pulse reflects and must return to the station before another pulse is emitted. What is the furthest distance at which an object may be detected using this system?

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Other parts of this question

  1. 4(i)Calculate the wavelength of the radiation and the number of waves emitted in a pulse.[6 marks]
  2. 4(ii)The power of the transmitter is 200 kW. What is the total energy in a pulse?[3 marks]
  3. 4(iii)After pulse emission, nothing is transmitted for one millisecond. Calculate how far the pulse travels in this time.[3 marks]

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