State an experimental phenomenon that provides evidence for:
the particulate nature of electromagnetic radiation
the wave nature of matter.
A particle of matter moves with momentum 
.
State the equation that gives the effective wavelength 
of the particle. State the name of any other symbols used.
State the name given to the wavelength of the moving particle.
Electrons are accelerated from rest through a potential difference (p.d.) of 
.
Show that the final speed of the electrons is 
.
Calculate the effective wavelength of a beam of electrons moving at the speed in (c)(i).
is Planck's constant
.
