Question

Determination of the focal length of convex 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. ... Focal length is the distance between optical centre of lens and focus. 5. Intercepts of a graph: If a graph cuts x-axis and y-axis, then lengths between origin and points of interception are intercepts of the graph.

Answer 2

Place the lens on the holder facing a distant object. ... The position of the screen should be such that the sharp image of the distant object is obtained on it. The difference between the position of the lens and the screen is equal to the focal length of the given convex lens.\

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