This question was attempted by many candidates however, and the performance was fair.
In part (a) for instance, many candidates were defining polarization instead of a polarizer some even defined a polarizer as a device used to polarize a beam of unpolarized light. In part (b) most candidates were able to draw the diagram but could not explain how it worked.
The expected answers are:
- (a) A polarizer is an (optical) device which allows vibrations(of light) to pass through in only one plane perpendicular to the direction of propagation
Note : Accept ‘direction’ in place of plane.
(b)