Given that 100 W/m² of a randomly polarized (unpolarized) light is incident normally on a stack of ideal linear polarizers that are positioned one behind the other with the transmission axis of the first vertical, the second at 30° from the vertical, the third at 60° from the vertical and the fourth at 90° from the vertical axis. How much light emerges after each polarizer?

Given that 100 W/m² of a randomly polarized (unpolarized) light is incident normally on a stack of ideal linear polarizers that are positioned one behind the other with the transmission axis of the first vertical, the second at 30° from the vertical, the third at 60° from the vertical and the fourth at 90° from the vertical axis. How much light emerges after each polarizer?