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Sahay Sir > Question Answers > Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) > A compound microscope uses an objective lens of focal length 4 cm and eye lens of focal length 10 cm. An object is placed 6 cm from the objective lens. (a) Calculate the magnifying power of the compound

A compound microscope uses an objective lens of focal length 4 cm and eye lens of focal length 10 cm. An object is placed 6 cm from the objective lens. (a) Calculate the magnifying power of the compound

(a) A screen is placed 90 cm from an object. The image of the object on the screen is formed by a convex lens at two different locations separated by 20 cm. Determine the focal length of the lens.