What is the focal length of Convex Mirror?

By BYJU'S Exam Prep

Updated on: September 25th, 2023

Focal length of a convex mirror is the distance between the pole and the principal focus. It is represented by the letter f. The radius of curvature is equal to twice the focal length i.e. R = 2f.

Answer: The distance between the pole and the principal focus is called the focal length of a convex mirror.

In a convex mirror, when an object’s position is at infinity, the image will form at the focus behind the mirror. The size of the image is highly diminished and its nature will be virtual and erect. On the other hand, if the object’s position is between infinity and the pole P of the mirror, the image will form Between P and F behind the mirror. The image size will be diminished and the nature will be virtual and erect.

Summary:

What is the focal length of Convex Mirror?

The focal length of a convex mirror is the distance between the principal focus from the pole. Also, it is equal to half its radius of curvature.

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