Calculate the wavelength of a radio wave whose frequency is 900 kHz. (v = 3.00 · 108 m/s.)

The wavelength of a radio wave whose frequency is 900 kHz will be 10³/3, or you can write it as 333.33 meters.

What is Wavelength?

To characterize waveform signals that are transmitted across wires or into space, the term "wavelength" is used to refer to the separation between two identical positions (adjacent crests) in succeeding cycles. Typically, this length in wireless systems is measured in meters (m), centimeters (cm), or millimeters (mm) (mm). When describing the wavelength of infrared (IR), visible light (UV), and gamma radiation, units of 10⁻⁹  nanometers (nm) or angstroms (10-10 m) are more usually used.

Frequency, which is defined as the number of wave cycles per second, and wavelength have an inverse relationship. The wavelength of a signal decreases with increasing frequency, or we can say that wavelength and refractive index are inversely proportional to each other.

According to the question, the given values are :

v = 3 × 10⁸ m/s and,

frequency, f = 900 kHz or,

f = 900 × 10³ Hz

λ = v / f

λ = (3 × 10⁸) / (3 × 10³)

λ = 10³/3 metes or,

λ = 333.33 meters.

So, the wavelength of a radio wave is 333.33 meters.

To get more information about wavelength :

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