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6 marksWave Parameters

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

Weather radar emits microwaves at frequency 3 x 10^9 Hz in pulses of 1.0 x 10^-6 s duration. [Speed of electromagnetic waves = 3 x 10^8 m s^-1]

Calculate the wavelength of the radiation and the number of waves emitted in a pulse.

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Other parts of this question

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

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