An AM radio station broadcasts at a frequency of 1270 kHz. Calculate the wavelength of the broadcast signal in meters. (c = 2.9979 * 10⁸ m/s) A) 256 m B) 236 m C) 216 m D) 196 m E) None of the above

Question

Quizplus · Accepted Answer

We can use the formula:

wavelength = speed of light / frequency

wavelength = 2.9979 × 10^8 m/s / 1270 × 10^3 Hz

wavelength ≈ 0.236 m ≈ 236 mm ≈ 9.3 inches

So the wavelength of the broadcast signal is about 0.236 meters or 236 millimeters. The closest answer choice is B) 236 m.

An AM Radio Station Broadcasts at a Frequency of 1270