# Photoelectric effect shows :

$\begin{array}{1 1}(a)\;\text{Particle-like behaviour of light}\\(b)\;\text{Wave-like behaviour of light}\\(c)\;\text{Both wave-like and Particle-like behaviour of light}\\(d)\;\text{Neither wave-like nor Particle-like behaviour of light}\end{array}$

It is an experimental evidence for particle nature of electron.
Hence (a) is the correct answer.