Answer:
Hope it helps!
Step-by-step explanation:
Light behaves both as a particle and as a wave. When UV light hits a metal surface, it causes an emission of electrons. Albert Einstein explained this "photoelectric" effect by proposing that light – thought to only be a wave – is also a stream of particles.
The main point of Einstein's light quantum theory is that light's energy is related to its oscillation frequency. ... The various properties of light, which is a type of electromagnetic wave, are due to the behavior of extremely small particles called photons that are invisible to the naked eye.
Credits:
Light is It a Wave or a Particle? - Canon Global
The first ever photograph of light as both a particle and wave