Define (1)pole 2, Focal Point (3) Focal length 4, centre of curvature 5, Radius of curvature.
Answers
Answer:
Pole: The centre of reflecting surface. It is represented by letter P.
Centre of Curvature: The centre of the sphere of which the mirror forms the part.
The focal length ( f ) is the distance from a lens or mirror to the focal point ( F ).
Light rays (of a single frequency) travelling parallel to the optical axis of a lens or mirror will meet at the focal point.
Radius of Curvature: The radius of the sphere of which the mirror forms the part. Represented by “R”. Principal axis: The straight line joining the pole (P) and the centre of curvature.
Explanation:
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Answer:
Pole:
It is the center of the reflecting surface of the concave mirror
focal point:
Rays of light parallel to the principal axis of a concave mirror will appear to converge on a point in front of the mirror somewhere between the mirror's pole and its center of curvature. That makes this a converging mirror and the point where the rays converge is called the focal point / focus .
Focal length :
Focal length of the spherical mirror is the distance from the pole of the mirror to the focus point of the object.
Centre of curvature :
Centre of curvature of a spherical mirror is defined as the centre of the sphere of which the spherical mirror is a part.
radius of curvature
the radius of a circle which touches a curve at a given point and has the same tangent and curvature at that point.
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