Define focal length of a special lence
Answers
Answered by
0
Explanation:
Focal length (shown in red) is thedistance between the center of a convex lensor a concave mirror and the focal point of thelens or mirror — the point where parallel rays of light meet, or converge.
Answered by
0
Answer:
For a thin lens in air, the distance from this point to the lens is the focal length, though it is negative with respect to the focal length of a converging lens. Convex-concave (meniscus) lenses can be either positive or negative, depending on the relative curvatures of the two surfaces.
Similar questions