what is wave length
Answers
Answer:
Definition: Wavelength can be defined as the distance between two successive crests or troughs of a wave.
Step-by-step explanation:
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Answer:
Definition: Wavelength can be defined as the distance between two successive crests or troughs of a wave. It is measured in the direction of the wave.
Step-by-step explanation:
Description: Wavelength is the distance from one crest to another, or from one trough to another, of a wave (which may be an electromagnetic wave, a sound wave, or any other wave). Crest is the highest point of the wave whereas the trough is the lowest. Since wavelength is distance/length, it is measured in units of lengths such as metres, centimetres, milimetres, nanometres, etc.
The following equation is known as the wavelength formula or the wavelength equation:
? = V/f (where ' V' is the speed of the wave and 'f' is the frequency of the wave)
Thus, Wavelength of the wave = Speed of the wave/ Frequency
Example: If the speed of a wave is 600m per second and the frequency of the waves is 30 waves per sec, then the wavelength will be equal to:
? = 600/30
? = 20 m
Wavelength of light varies with colours, i.e., it is different for every colour. Red colour has the longest wavelength while violet has the least. The wavelength of UV radiation is shorter than violet light. Similarly, the wavelength of infra red radiation is longer than the wavelength of red light.
Wavelength is inversely proportional to frequency. This means the longer the wavelength, lower the frequency. In the same manner, shorter the wavelength, higher will be the frequency.