Question

Define the principal focus of a concave mirror.​

Answer 1

Answer:

It is the point at which all the incident ray converges

Explanation:

When we draw a incident ray parrelel towards the principal axis the point through which the incident ray passes the principal axis is known as principal focus

Answer 2

Explanation:

Light rays that are parallel to the principal axisof a concave mirror converge at specific point on its principal Axis after reflecting from the mirror. this point is known as the principal focus of the concave mirror .