Question

The centre of the mirror surface is called it's _______.​

Answer 1

The center of the reflecting surface of a spherical mirror is called as the pole of the mirror which is mainly known as the center of curvature. In addition to this, the straight line passes through this center of the reflecting surface in a spherical mirror that is termed as a Principal axis.

So thus the answer will be

-) curvature.

Hope it helps uh.

Answer 2

Answer:

The centre of the mirror surface is called it's curvature