What is meant by plane polarized light?

Explanation

**Step-by-Step Solution:**

1. **Definition of Plane Polarized Light**: Plane polarized light refers to a beam of light in which the vibrations of the electromagnetic waves are restricted to a single plane. This means that instead of vibrating in multiple directions, the light waves oscillate only in one specific direction.

2. **Ordinary Light vs. Plane Polarized Light**: Ordinary light, such as sunlight or light from a bulb, consists of electromagnetic waves that vibrate in all possible directions perpendicular to the direction of propagation. In contrast, plane polarized light has its vibrations confined to one plane.

3. **Monochromatic Light**: Monochromatic light is light that consists of a single wavelength. While plane polarized light can be monochromatic, it is not limited to just one wavelength. The key characteristic of plane polarized light is the orientation of its vibrations.

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