Use a simple diagram to explain how polarization by reflection occurs $($mention Brewster's angle$).$

$[3$ Marks$]$

Compute the de Broglie wavelength for the following:

$($i$)$ An electron with $1$ eV kinetic energy.

$[3)$

$($ii$)$ A $10$ g bullet travelling at $3{10}^{2}m{s}^{-1}$

$[3$

$3/5$