question_answer

Unpolarised light with an intensity of \[{{I}_{0}}=16\]\[w/{{m}^{2}}\]is incident on a pair of polarisers. The first polariser has its transmission axis aligned at \[50{}^\circ \]from the vertical. The second polariser has its transmission aligned at \[20{}^\circ \]from the vertical. What is the intensity (in\[W/{{m}^{2}}\]) of the light? When it emerges from the second polarizer.

Answer:

6.00