An electromagnetic wave has a frequency of 500 MHz and a wavelength of 60 cm.

(a) Calculate the speed of the wave.

(b) Name the medium through which it is travelling.

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Solution

(a) Frequency = 500MHz = 500 x Hz
Wavelength = 60 cm = 0.6 m
Velocity of wave = frequency x wavelength = 500x x 0.6 = 3 x m/s
(b) Electromagnetic wave is travelling through air.

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