Light waves come in many different varieties, and can be seen as many different colors. What is the main difference between a light wave that produces the color blue and a light wave that produces the color red? A. wavelength B. amplitude C. direction D. magnitude

A. Wavelength

Explanation:

A wavelength is the distance between two successive crests or troughs of a wave.

The difference between blue light and red light is just that the rays of red light have longer wavelength than that of blue light.

Due to this, blue light has a higher frequency than red light. This is because wavelength and frequency are inversely proportional (the higher the wavelength, the lower the frequency).

c = λ * f

Where  λ = wavelength, c = speed of light, f = frequency

Hence, blue light has more energy than red light, because energy is directly proportional to frequency (the higher the frequency, the higher the energy)

Where h = Plancks constant