what is the focal length of concave and convex mirror
Answers
Answer:
Concave Mirror
Focal length is the distance between the center of a convex lens or a concave mirror and the focal point of the lens or mirror the point where parallel rays of light meet, or converge
Convex Mirror
The focal length is the distance between the center of the convex mirror and the focal point of the convex mirror.
The plane passing through focus and perpendicular to the principal axis of the convex mirror is termed as the focal plane.
focal length of concave mirror : The distance between the pole P of the concave mirror and the focus F is the focal length of the concave mirror. Thus, the focal length of a concave mirror can be estimated by obtaining a 'Real image' of a distant object at its focus.
focal length of convex mirror : According to the Cartesian sign convention, the focal length should be positive since the convex mirror forms a virtual image to the right of mirror (positive direction) when light comes from left.
A convex mirror has a focal length of -10.8 cm.