Case : Read the passage and answer the question(s).

A tourmaline crystal is placed such that its crystallographic axis AB is parallel to y-axis. Sunlight is made to pass through it. After the emergence of light from the tourmaline crystal, certain properties of the light are affected.

The vibrations of the emergent light is parallel to which axis?

y-axis

Since the crystallographic axis AB of the crystal is parallel to the y- axis, the vibrations will be restricted to the y-axis.