Question

What is the difference between the principal focus of the concave and convex mirrors?​

Answer 1

Answer:

Principal focus of Convex Mirror:

A number of rays which falls parallel to the principal axis after getting reflected, the rays seems to come from a point on the principal axis. This is called as Principal focus Convex Mirror.

Principal focus of Concave Mirror:

A number of rays which falls parallel to the principal axis on a concave mirror meets at a point on the principal axis after getting reflected. This is known as the principal focus of a concave mirror.

The incident rays are converged by a convex lens. As a result, the rays converge in front of the lens at a single point. As a result, the image distance is positive in this case. Image distance is negative in the case of concave leans.

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