What is coherent light?
A)light of a single wavelength
B)light that is all in phase
C)light that is polarized in one direction
D)none of the above

Question

Quizplus · Accepted Answer

Coherent light refers to light waves that are all in phase with each other, meaning the crests and troughs of the waves all line up. This results in a beam of light that has a consistent and steady pattern, unlike incoherent light which has waves that are not synced up and create a random or fluctuating pattern. The coherence of light is important in applications such as lasers, where the light needs to be focused and directed with precision. While a single wavelength or polarization can be characteristics of coherent light, they are not defining factors.

What Is Coherent Light