Uses of plane mirrors

Plane mirrors are used to create multiple images by reflecting light back and forth between two mirrors. Example: In barbershops, one mirror is placed in front of the barber, and another is behind the customer. This allows the customer to see the back of their head clearly.

Periscopes are optical instruments that use two plane mirrors to help people see things that are not in their direct line of sight.

Periscope Structure

How it works

1. Two plane mirrors are placed inside a rectangular or cylindrical tube at 45° angles to reflect light from one mirror to the other.
2. This allows someone to view objects that are hidden or behind obstacles.

Examples of Use

1. Submarines: Periscopes help submarines see objects above the water surface while staying underwater.
2. In trenches or for surveillance: Periscopes are used to see over walls or around obstacles.

1. Plane mirrors are helpful for viewing around sharp corners, such as at a road intersection.
2. A plane mirror placed at the corner reflects light from objects that are not directly visible, helping people see vehicles or pedestrians around the corner.

Viewing cars around the corner using a plane mirror

1. Home Decoration: Plane mirrors are used as wall decorations to make rooms look bigger and brighter.
2. In Instruments: Mirrors are used in optical instruments like telescopes, microscopes, and cameras.
3. In Dressing Mirrors: They allow us to see our reflection when getting dressed or grooming.