Question

The property by virtue of which a compound can rotate the plane polarised light is known as

• A. Photolysis
• B. Phosphorescence
• C. Optical activity
• D. Polarization

Answer 1

The correct option is C Optical activity

Plane polarised light is a light in which the vibrations are aligned in a single plane. When these lights are passed through certain compounds they rotate the plane of Plane Polarised Light at different angles. Some compounds will rotate the plane of Plane Polarised Light in the clockwise direction and some in the anti-clockwise direction.
The property by virtue of which a compound can turn the plane polarised light is known as Optical activity