# Define the pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror.

By Ritesh|Updated : November 4th, 2022

The definition of pole, the center of curvature, the radius of curvature, the principal axis, the aperture, focus, and focal length of a spherical mirror is mentioned below.

Spherical Mirror: A spherical mirror is a mirror that resembles a portion that has been removed from a spherical surface. Spherical mirrors come in two different shapes: convex and concave.

Concave Mirror: A concave mirror has its reflecting surface oriented toward the centre of the sphere in which it is embedded.

Convex Mirror: A convex mirror is one whose reflecting surface is offset from the mirror's central axis.

Pole: The reflecting surface's geometrical center is known as the pole. The letter P is used to symbolise it. The sphere's centre, which the mirror is a part of, is the point of curvature. C is used to symbolise it. The diameter of the sphere, of which the mirror is a part, is known as the radius of curvature. It is symbolised by R. PC = R

Principal axis: The line connecting the curvature's centre (C) and the pole (P). The mirror at its pole is typical.

Aperture: The spherical mirror's diameter is referred to as its aperture. It symbolises the mirror's reflecting surface.The definition of pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror is mentioned above.

Focus: The major axis point at which the parallel rays of light either actually meet (in a concave mirror) or appear to meet (in a convex mirror) after reflection. F is used to symbolise it.

Focal Length: The focal length of a spherical mirror is the distance between the main focus and pole. F is used to signify it.

Focal length f = PF Summary:

## Define the pole, the center of curvature, the radius of curvature, principal axis, aperture, focus, and focal length of a spherical mirror.

A spherical mirror's centre of curvature, major axis, aperture,radius of curvature, focus, and focal length are all described above. A spherical mirror is a mirror with a cut-out spherical surface. There are two types of spherical mirrors: concave and convex mirrors. GradeStack Learning Pvt. Ltd.Windsor IT Park, Tower - A, 2nd Floor, Sector 125, Noida, Uttar Pradesh 201303 help@byjusexamprep.com