What is the wavelength of an FM radio signal if the number on the dial reads 88.6
MHz? The speed of light is 3 x 108 m/s.
Answer in units of m.

V = 3.0 x 10⁸ m/s         (This is the same for all types of electromagnetic waves)

f = 88.6 MHz = 8.86 x 10⁷ Hz

λ = ?

V = fλ

λ = V/f = (3 x 10⁸)/(8.86 x 10⁷)

  =  3.4 m     [Ans]

Hope this helps!

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