Physics (AS & A Level) · May / June 2026 · Paper 14 · Question 24

A beam of plane-polarised light of intensity I₀ is incident normally on a polarising filter. The initial intensity of the transmitted light is zero. The filter is then rotated through 360° whilst remaining normal to the beam. Which graph shows how the intensity of the transmitted light varies with the angle of the filter to its original position?

1. Agraph A
2. Bgraph B
3. Cgraph C
4. Dgraph D

As printed in the paper