Can the phenomenon of photoelectric effect be explained on the basis of wave theory ?

What is photoelectric effect?

Using photon picture of light, show how Eintein's photoelectric equation can be established. Write two features of photoelectric effect which cannot be explained by wave theory.

Can the phenomenon of rectilinear propagation,reflection and refraction be explained on the basis of wave nature of light?

Can photoelectric effect be produced on copper or silver?