(a(i))[1]
State an experimental phenomenon that gives evidence for the particulate nature of electromagnetic radiation.
(a(ii))[1]
State an experimental phenomenon that gives evidence for the wave nature of matter.
(b)
A matter particle travels with momentum $p$.
(b(i))[2]
State the equation for the particle’s effective wavelength $\lambda$. State the name of any other symbols used.
(b(ii))[1]
State the name used for the wavelength of the moving particle.
(c)
Electrons are accelerated from rest through a potential difference (p.d.) of $4.8\,\text{kV}$.
(c(i))[2]
Show that the electrons’ final speed is $4.1 \times 10^{7}\,\text{m s}^{-1}$.
(c(ii))[2]
Calculate the effective wavelength of a beam of electrons moving at the speed from (c)(i).