Define the terms given below related to the spherical mirror.​PoleCentre of curvatureRadius of curvaturePrincipal axis:

Sure! Here are the definitions of the terms related to a spherical mirror:

1. Pole: The pole of a spherical mirror is the geometric center of the mirror's curved surface. It is denoted by the letter 'P' and represents the point where the principal axis intersects the mirror.

2. Centre of curvature: The centre of curvature of a spherical mirror is the center of the imaginary sphere from which the mirror is derived. It is denoted by the letter 'C' and is located on the principal axis, at a distance equal to the radius of curvature from the pole.

3. Radius of curvature: The radius of curvature of a spherical mirror is the distance between the pole and the centre of curvature. It is denoted by the letter 'R' and represents the radius of the imaginary sphere from which the mirror is derived.

4. Principal axis: The principal axis of a spherical mirror is the straight line passing through the pole and the centre of curvature. It is the axis of symmetry for the mirror and is used as a reference line for measuring distances and angles in mirror optics.

I hope this helps! Let me know if you have any further questions.