An object is first placed at a distance 24 cm from the lens and then at a distance of 16 cm from the lens. The magnification of the image formed is same in both the cases. The focal length of the lens is -

An object is first placed at a distance 24 cm from the lens and then a

1.	An object is first placed at a distance 24 cm from the lens and then at a distance of 16 cm from the lens. The magnification of the image formed is same in both the cases. The focal length of the lens is -
A.	22 cm
B.	18 cm
C.	20 cm
D.	8 cm
Answer» D. 8 cm

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An object is first placed at a distance 24 cm from the lens and then at a distance of 16 cm from the lens. The magnification of the image formed is same in both the cases. The focal length of the lens is -

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