Question

experiment: to obtain the focal
of a covex lens​

Answer 1

Answer:

To find the focal length of a convex lens by plotting graphs between u and v or between 1/u and 1/v. ... Principal focus is the point where rays parallel to the principal axis focus after passing through the lens (convex) or appear to come from after passing through the lens (concave).

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Answer 2

Answer:

your question is wrong please check your question