Two polarising filters are placed next to each other so that their planes are parallel. The first polarising filter has its transmission axis at an angle of to the vertical. The second polarising filter has its transmission axis at an angle of
to the vertical. The angle between the transmission axes of the two polarising filters is
. A beam of vertically polarised light of intensity
is incident normally on the first polarising filter. What is the intensity of the light that is transmitted from the second polarising filter?
zero