Explain the experiment to finde out the focal length of a convex lens ,the focal length of a convex is 100 cm ,finde it's power for 10 th classe.
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To determine focal length of a convex lens
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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