Question

how can you decide the focal length of the biconvex lens​

Answer 1

Explanation:

To determine focal length of a convex lens

Place the holder with the screen on the bench

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.

Answer 2

Answer:

Hello mate

Explanation:

To determine focal length of a convex lens

Place the holder with the screen on the bench. 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.