Actually, the statement you provided is incorrect. Red light has a longer wavelength and lower frequency compared to blue light. Allow me to explain further.
Light is an electromagnetic wave that exhibits both wave-like and particle-like properties. It travels in the form of packets of energy called photons. The color of light is determined by its wavelength and frequency.
Wavelength is the distance between two consecutive peaks or troughs of a wave, and frequency is the number of wave cycles passing through a given point in one second. The relationship between wavelength (λ), frequency (f), and the speed of light (c) is given by the equation: c = λf.
When we consider the visible light spectrum, red light has the longest wavelength among the colors visible to the human eye, ranging from approximately 620 to 750 nanometers (nm). Blue light, on the other hand, has a shorter wavelength, typically ranging from 450 to 495 nm.
Since the speed of light is constant, the equation mentioned earlier implies that if one value (wavelength or frequency) increases, the other must decrease in order to maintain the constant speed. Therefore, since red light has a longer wavelength, its frequency is lower compared to blue light, which has a shorter wavelength.
In summary, red light has a longer wavelength and lower frequency than blue light.