The Brewsters angle \({i}_{b}\)for an interface should be :

\(30^\circ <{\mathrm{i}}_{\mathrm{b}}<45^\circ\)

\(45^\circ <{\mathrm{i}}_{\mathrm{b}}<90^\circ\)

\({i}_{b}=90^\circ\)

\(0^\circ <{\mathrm{i}}_{\mathrm{b}}<30^\circ\)