Write down de Broglie’s relation and explain the terms therein.

According to de-Broglie hypothesis every moving particle is associated with some wave with it called as matter wave or de-Broglie wave.
Expression for de-Broglie wavelength is
$\mathrm{\lambda }=\frac{\mathrm{h}}{\mathrm{mv}}$ where h = Planck’s constant,
m = mass of the particle; v = velocity of particle.