What is the minimum number of rays required for locating the image formed by a concave mirror for an object? Draw a ray diagram to show the formation of a virtual image by a concave mirror.
Minimum two rays are required.
Ray diagram for the formation of a virtual image by a concave mirror:

Question

What is the minimum number of rays required for locating the image formed by a concave mirror for an object? Draw a ray diagram to show the formation of a virtual image by a concave mirror.

Philoid · Accepted Answer

Minimum two rays are required.

Ray diagram for the formation of a virtual image by a concave mirror: