1 a) AM radio signals are broadcast at frequenciesbetween550kHz and 1600 kHz and

Question

1 a) AM radio signals are broadcast at frequenciesbetween550kHz and 1600 kHz and travel 2.99792 X 108 m/s.Whatisthe shortest AM wavelength? Answer in units of m. b) What is the longest AM wavelength? Answer inunitsofm. c) FM frequencies range between 88 MHz and 108 MHz andtravelatthe same speed. What is the shortest FM wavelength? Answerinunitsof m. d) What is the longest FM wavelength? Answer inunitsofm. 1 a) AM radio signals are broadcast at frequenciesbetween550kHz and 1600 kHz and travel 2.99792 X 108 m/s.Whatisthe shortest AM wavelength? Answer in units of m. b) What is the longest AM wavelength? Answer inunitsofm. c) FM frequencies range between 88 MHz and 108 MHz andtravelatthe same speed. What is the shortest FM wavelength? Answerinunitsof m. d) What is the longest FM wavelength? Answer inunitsofm.

Explanation / Answer

We know wavelength () = Velocity / frequency So for shortest AM , = 2.99792 X 108 m/s / (1600*103) =187.4 m So for longest AM , = 2.99792 X 108 m/s / (550*103) = 545m So for shortest FM, = 2.99792 X 108 m/s / (108*106) =2.78 m So for longest FM , = 2.99792 X 108 m/s / (88*106) =3.4 m

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