I came across a question in my Textbook which I am unsure about.
Two polarising filters are aligned to transmit vertically polarised light. They are held in front of a source of horizontally polarised light. The filter closest to the light source is rotated by 45 degrees. The intensity of the light passing through the filters:
A does not change
C increases to maximum intensity
The answer given is option B, however I don't understand why the intensity increases?