Two radio waves are used in the operation of a cellulartelephone. To receive a c

Question

Two radio waves are used in the operation of a cellulartelephone. To receive a call, the phone detects the wave emitted atone frequency by the transmitter station or base unit. To send yourmessage to the base unit, your phone emits its own wave at adifferent frequency. The difference between these two frequenciesis fixed for all channels of cell phone operation. Suppose thewavelength of the wave emitted by the base unit is 0.34186 m andthe wavelength of the wave emitted by the phone is 0.36694 m. Usinga value of 2.9979 x 108 m/s for the speed of light,determine the difference between the two frequencies used in theoperation of a cell phone. Give your answer to five significantfigures.

Explanation / Answer

Let T be the time period, the frequency f=1/T T*c= with be the wave length T=/c so f=c/. so f=c/1-c/2=6e7Hz

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