Question

Calculate the wavelength of each of the following frequencies of electromagnetic radiation.

Part A 101.8 MHz (typical frequency for FM radio broadcasting) Express your answer in meters using four significant figures.

Part B 1050 kHz (typical frequency for AM radio broadcasting) Express your answer in meters using four significant figures.

Part C 835.6 MHz (common frequency used for cell phone communication) Express your answer in meters using four significant figures.

Answer 1

Part A 101.8 MHz

     v     = 101.8MHz

             = 101.8*10^6 Hz

C         = 3*10^8m/sec

C       = v

      = C/v

            = 3*10^8/101.8*10^6     = 2.946m

Part B 1050 kHz

          1050*10^3 Hz

    C         = 3*10^8m/sec

C       = v

      = C/v

            = 3*10^8/1050*10^3     = 285.7m

Part C 835.6 MHz

           835.6MHz   = 835.6*10^6 Hz

C         = 3*10^8m/sec

C       = v

      = C/v

            = 3*10^8/835.6*10^6     = 0.3590m