Biology, asked by smitadhawade9212, 1 month ago

definition of focal length ​

Answers

Answered by tinkik35
0

Answer:

the distance of a focus from the surface of a lens or curved mirror.

The focal length of a lens f is the distance from a lens to the focal point F. Light rays (of a single frequency) traveling parallel to the optical axis of a convex or a concavo-convex lens will meet at the focal point

Answered by EuphoriaAnn
6

The distance between the centre of a lens or curved mirror and its focus.

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