Question

what sign convensation are used for reflection from a spherical mirror?​

Answer 1

Answer:

Sign convention for reflection by spherical mirror.

The distance measured perpendicular to and above the principal axis are given a positive sign. The distance measured perpendicular to and below the principal axis are given a negative sign.

Explanation:

@BrainlyWarrior

Answer 2

Answer:

Distances along the direction of the incident ray (along positive x- axis) are taken as positive, while distances along the direction of the reflected ray (along negative x-axis) are taken as negative.

Explanation:

@darksoul