what is pole, principle axis, Reflection in spherical mirror ?
A pole in a spherical mirror is the point of the surface of the mirror that is farthest away from the center of curvature. It is the point at which the light rays that strike the mirror converge.
Principle axis in a spherical mirror is an imaginary line that passes through the center of the mirror and is perpendicular to it. It is the line along which the rays of light reflected from the mirror will appear to converge.
Reflection from a spherical mirror is the reflection of light off a curved surface. It is also known as spherical aberration. When light strikes a curved mirror, the light is reflected off in different directions, depending on the angle of incidence. This is due to the fact that the radius of curvature of the mirror is different at different parts of the mirror surface. As a result, the light rays are refracted in different directions, resulting in an image that is distorted.