Question

why is the radius of the curvature of convex mirror positive? ​

Answer 1

Hey mate,

Here's your answer.. ☺

⏩Answer:

• By convention, distances are measured, along the central axis, as positive from the mirror in the direction of the object and negative away from the object.
• Hence the radius of curvature and the focal length are positive for concave mirrors and negative for convex mirrors.

Hope it helps.❤