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A lens of focal length 12cm forms an erect image three times the size of the object. The distance between the object and the image is A)8cm. B)16cm. C)24cm. D)36cm

Answer» A lens of focal length 12cm forms an erect image three times the size of the object. The distance between the object and the image is
A)8cm. B)16cm. C)24cm. D)36cm


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