A lens forms a real image of an object. The distance from the object t – McqOptions

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1.	A lens forms a real image of an object. The distance from the object to the lens is x cm and that from the lens to the image is y cm. The graph (see figure) shows the variation of y with x. It can be deduced that the lens is
A.	Converging and of focal length 10 cm
B.	Converging and of focal length 20 cm
C.	Converging and of focal length 40 cm
D.	Diverging and of focal length 20 cm
Answer» B. Converging and of focal length 20 cm

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