For electromagnetic waves (like light):
* Velocity is constant: The speed of light in a vacuum is a constant, approximately 299,792,458 meters per second. This means that regardless of the wavelength of light, its velocity remains the same.
* Frequency changes: As wavelength increases, the frequency of the light decreases. This is because the product of wavelength and frequency always equals the speed of light:
* c = λf
* Where:
* c = speed of light
* λ = wavelength
* f = frequency
For mechanical waves (like sound):
* Velocity depends on the medium: The velocity of a mechanical wave depends on the properties of the medium it travels through. For example, sound travels faster in solids than in liquids, and faster in liquids than in gases.
* Wavelength and frequency can change: As wavelength increases, the frequency of the sound wave decreases, and vice versa. This is because the speed of the wave is determined by the medium:
* v = λf
* Where:
* v = velocity of the wave
* λ = wavelength
* f = frequency
In summary:
* For electromagnetic waves, velocity is constant, and wavelength and frequency are inversely proportional.
* For mechanical waves, velocity depends on the medium, and wavelength and frequency are inversely proportional.
