What is the wavelength of a radio photon from an "am" radio station that broadcasts at 1120 kilohertz?

The wavelength of the radio photon is 267.9 m

Since the radio photon is an electromagnetic wave, we use the equation for the speed of an electromagnetic wave.

v = fλ where

Making λ subject of the formula, we have

λ = v/f

Substituting the values of the variables into the equation, we have

λ = 3 × 10⁸ m/s ÷ 1.120 × 10⁶ Hz

= 2.679 × 10² m

= 267.9 m

So, the wavelength of the radio photon is 267.9 m

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The wavelength of the radio photon  is 268 m.

Electromagnetic waves travel with the speed of 3×10⁸m/s in vacuum. The speed of a wave c is related to its frequency f and wavelengthλ as follows:

Thus the wavelength is given by,

Substitute 3×10⁸m/s for c and 1120×10³Hz for f.

Thus the wavelength of the radio photon from an AM station is 268 m