State two effects to show (a) the… | Physics

Question 1 Report

State two effects to show (a) the existence of matter waves;

(b) that radiation behaves like particles.

Answer

Answer Details

(a) Two effects showing the existence of matter waves:

Diffraction of a beam of electrons by a crystal (the Davisson-Germer experiment), giving an interference/diffraction pattern like waves.
The operation of the electron microscope, which uses the wave nature of electrons to form images.

(b) Two effects showing that radiation behaves like particles:

The photoelectric effect (light ejects electrons from a metal, explained by photons).
The Compton effect (scattering of X-rays by electrons, in which the radiation behaves as particles carrying momentum).

State two effects to show (a) the existence of matter waves; (b) that radiation behaves like particles.