Yes, light is an electromagnetic wave that exhibits oscillating electric and magnetic fields perpendicular to each other and to the direction of propagation. Each wavelength corresponds to a specific frequency and energy level of light.
Regarding your question, the cancellation of light waves through counterphase interference, similar to what occurs with sound waves, is indeed possible. This phenomenon is known as destructive interference. Destructive interference can occur when two or more light waves with the same frequency and opposite phases (180 degrees out of phase) superimpose on each other. As a result, the peaks of one wave align with the troughs of the other wave, leading to their amplitudes canceling out or significantly reducing.
This property of destructive interference can be observed in various optical phenomena, such as thin film interference, diffraction patterns, and interference patterns created by interfering coherent light sources. However, it's important to note that achieving complete cancellation of light over a wide range of wavelengths is generally challenging due to the complex nature of light and the practical limitations of interference systems.