What are the characteristics of an image formed by a plane mirror?

How will you experimentally locate the image of an object made by a plane mirror?

Draw a ray diagram to locate the image of an object placed $4 \mathrm{cm}$ in front of a plane mirror.

Why are multiple images seen when two plane mirrors are placed at an angle? What will be the number of images seen when two plane mirrors are placed at an angle of $36°$to each other?

The figure shows a patient having her eye tested. A chart with letters is placed behind her, and it is reflected in a plane mirror. How far from the patient is the image of the chart?