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7 marksElectromagnetic Waves

CSEC Physics · January 2009 · Paper 2 · Question 2(a)

Complete Table 3 below to show the link between an electromagnetic wave, its source and its use or effect.

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Other parts of this question

  1. 2(b)Microwaves travel at a speed of 3.0 x 10⁸ m s⁻¹ in a vacuum and have a frequency of 1.5 x 10¹⁰ Hz. Calculate the wavelength of microwaves, in centimetres.[4 marks]
  2. 2(c)As the microwaves enter water at an angle of incidence of 45°, their speed is reduced to 2.0 x 10⁸ m s⁻¹. Calculate the wavelength of the microwaves in water.[4 marks]

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