Physics
Haff273
2016-04-10 11:14:36
An fm radio station broadcasts electromagnetic radiation at a frequency of 101.7 mhz. the wavelength of this radiation is ________ m.
ANSWERS
Selfieswag
2016-04-10 11:26:44

The velocity of electromagnetic radiation in free space (air) is the speed of light. It is c = 3 x 10⁸ m/s. The broadcasting frequency is f = 101.7 mhz = 101.7 x 10⁹ hz. Because velocity =  frequency *  wavelength, the wavelength of the radiation is λ = c/f    = (3x10⁸ m/s)/(101.7x10⁹ 1/s)    = 2.95 x 10⁻³ m     = 2.95 mm Answer: 2.95 mm

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