Question

Define the following terms:

(i) Spherical mirror (ii) Concave mirror (iii) Convex mirror (iv) Pole (v) Centre of curvature

(vi) Radius of curvature (vii) Principle axis (viii) Principle focus (ix) Focal length (x) Apertu​

Answer 1

Answer:

I HOPE IT HELPS!!!!

Explanation:

1) Spherical mirror - A spherical mirror is a mirror which has the shape of a piece cut out of a spherical surface.  

2)Concave mirror - A concave mirror, or converging mirror, has a reflecting surface that is recessed inward (away from the incident light). Concave mirrors reflect light inward to one focal point. They are used to focus light.

3)Convex mirror - A convex mirror is a spherical reflecting surface (or any reflecting surface fashioned into a portion of a sphere) in which its bulging side faces the source of light.

4)Pole -  It's the point at the middle of the spherical mirror.

5)Centre of Curvature - The centre of the hollow sphere of which the reflecting surface of the mirror is a part.

6)Radius of Curvature - The distance from the vertex to the center of curvature is the radius of curvature of the surface.

7)Principal axis - It is the line passing through the optical centre and centres of curvature of the faces of a lens or a curved mirror.

8)Principal focus - The principal focus is the point where a beam parallel to the principal axis converges or appears to diverge from a point on the principal axis after passing through the lens.

9)Focal length - The distance between the centre of a lens or curved mirror and its focus.

10)Aperture - The aperture of a lens is a kind of ring inside the lens that controls the amount of light entering the lens.