Suppose you are located 190 m from a radio transmitter. (a) How many wavelengths

Question

Suppose you are located 190 m from a radio transmitter.

(a) How many wavelengths are you from the transmitter if the station calls itself 1155 AM? (The AM band frequencies are in kilohertz.)

(b) What if this station is 98.1 FM? (The FM band frequencies are in megahertz.)

Suppose you are located 190 m from a radio transmitter. (a) How many wavelengths are you from the transmitter if the station calls itself 1155 AM? (The AM band frequencies are in kilohertz.) wavelengths (b) What if this station is 98.1 FM? (The FM band frequencies are in megahertz.) wavelengths

Explanation / Answer

frquency f=1155 AM

f=1155*10^3 Hz

now,

wavelength, lambda= C/lambda

=3*10^8/(1155*10^3)

=259.74 m

amd

wavelengths, n=lambda/190

=259.74/(190)

=1.37

b)

frquency f=98.1 FM

f=98.1*10^6 Hz

now,

wavelength, lambda= C/lambda

=3*10^8/(98.1*10^6)

=3.058 m

amd

wavelengths, n=lambda/190

=3.058/(190)

=0.016

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