(a(i))[1]
State an experimental result that shows electromagnetic radiation has a particulate nature.
(a(ii))[1]
State an experimental phenomenon that provides evidence for the wave nature of matter.
(b)
A matter particle has momentum $p$.
(b(i))[2]
State the equation for the particle’s effective wavelength $\lambda$. State the name of any other symbols involved.
(b(ii))[1]
State the name used for the wavelength associated with the moving particle.
(c)
Electrons start from rest and are accelerated across a potential difference (p.d.) of $4.8\,\text{kV}$.
(c(i))[2]
Show that the electrons finish with a speed of $4.1 \times 10^{7}\,\text{m s}^{-1}$.
(c(ii))[2]
Calculate the effective wavelength for electrons travelling at the speed found in (c)(i).