$3.18 \mathrm{Wm}^{-2}$

$0.31 \mathrm{Wm}^{-2}$

$0.62 \mathrm{Wm}^{-2}$

$5 \mathrm{Wm}^{-2}$

$D$

$E$

$F_1$

$F_2$

the same direction and in same phase.

the same direction but have a phase difference of $90^{\circ}$.

mutually perpendicular directions and are in same phase.

mutually perpendicular directions but have a phase difference of $90^{\circ}$.

X-rays

radio waves

UV-waves

visible rays