Define the following in the case of a concave mirror. i. Centre of curvature ii. Principal axis iii. Principal focus iv. Focal length
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Answer:
ii) Centre of curvature:
Explanation:
The centre of a sphere from which the given spherical mirror (convex or concave) is obtained is called as centre of curvature. It is denoted by the letter C. iii) Principal axis: An imaginary straight line passing through the pole and centre of curvature is termed as the principal axis
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(1) CENTER OF CURVATURE: The Center of a sphere from which the given Concave mirror is called as Center of curvature. It is denoted by the letter C.
(2)Principal axis: An imaginary straight line passing through the pole and centre of curvature is termed as the principal axis.
(3)PRINCIPAL FOCUS: The point at which rays parallel to principal axis coming from infinity converge after being reflected from concave mirror is called the principal focus of concave mirror.
(4)Focal length: Focal length is the distance between the center of a concave mirror and the focal point of the mirror the point where parallel rays of light meet or converge.
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