Answer :
From low to high frequency, a wave's wavelength increases while its frequency decreases: 0.8 km, 5 m, 7 cm, 3 m, 460 nm, and 0.02 nm. The characteristic of a wave is known as its wavelength.
A wave's wavelength is the characteristic that determines how far identical locations between two succeeding waves are separated. The Greek letter lambda () is used to represent it. Thus, the wavelength is defined as the separation between one wave's crest or trough and the following wave.
The frequency of an event is its repetitions per unit of time. As a contrast to spatial frequency, it is also sometimes referred to as temporal frequency, and as a contrast to angular frequency, it is sometimes referred to as ordinary frequency.
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