Question

What is pole in physics?

Answer 1

Pole:

1. The pole is the central point of the spherical mirror.
2. The pole of the mirror is the point where the principal axis pierces the mirror.
3. The letter P is commonly used to represent the pole.
4. The principal axis is the straight line connecting the pole (P) and the center of curvature.

A diagram of the pole is given below:

Here,

$\mathrm{P}$ is the pole.

$\mathrm{F}$ is the focus.

$\mathrm{C}$ is the center of curvature.