Question

define the following for convex lens - 1) opical centre
2) focus length
3) focus
please guys answer fast ..​

Answer 1

☆☆ANSWER ☆☆

(2). focus length is the correct option.

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Answer 2

Explanation:

(i) Optical Center :- The central point of the lens is called its optical center . It is incident towards the optical center passes almost without any deviation through the lens .

(ii) Focal Length :- The distance between the pole and the focus is called it's focal length . It 8s denoted by f .

(iii) Focus :- Focus, also called an image point, is the point where light rays originating from a point on the object converge .

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