Question

In a linearly polarized light, the electric vector oscillates along a direction
perpendicular to the aligned molecules of the polaroid, called____ axis.​

Answer 1

The electric vector oscillates along a direction

perpendicular to the aligned molecules of the polaroid, called pass axis.​

Explanation:

If the electric vector vibration is aligned to move one direction only in a plane perpendicular to the direction of propagation the light is linearly polarised.

In linearly polarized light,The electric vector oscillates along a direction

perpendicular to the aligned molecules of the polaroid, called pass axis.​

Answer 2

Pass axis

Explanation:

Every Polaroid has a pass axis. It will allow light to pass only through the pass axis. A polaroid can have horizontal pass axis as well as vertical pass axis. Pass axis (or polarization axis) is that axis along which the unpolarized light get polarized after passing through the Polaroid.

Use: The light which gets inside the camera is unpolarized light. The picture can have glare due to this. A polarizer is used to convert unpolarized light into polarized light. This filter eliminates all glares and extra amount of light going inside the camera. A polarizer is generally used in cases where you have to do photography on a bright sunny day.