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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > An optical bench has 1.5 m long scale having four equal division in each cm. While measuring the focal length of a convex lens, the lens is kept at 75 cm mark of the scale and the object pin

An optical bench has 1.5 m long scale having four equal division in each cm. While measuring the focal length of a convex lens, the lens is kept at 75 cm mark of the scale and the object pin

An optical bench has 1.5 m long scale having four equal division in each cm. While measuring the focal length of a convex lens the lens is kept at 75 cm mark of the scale and the object pin