If the frequency of oscillation of the wave emitted by an FM radio station is 89.8 MHz, determine the wave's wavelength.
This is what I did:
89.8 MHz = 89800000 Hz
v = lambda x f
lambda = v/f = 343 m/s/89800000 Hz = 3.82 x 10^-6 m
What am I doing wrong?
You are using the velocity of sound instead of the velocity of light. There is a considerable difference in them.
How do you know that the speed of light should be used.
I used the speed of sound because the question said, "radio station".