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An extended object is placed at point O, 10cm in front of a convex lens L1 and a concave lens L2 placed behind it as shown in the figure. The radii of curvature of all the curved surfaces in both the lenses are 20cm. the refractive of both lenses is 1.5. The total magnification of this lens system is:
A) 0.4
B) 0.8
C) 1.3
D) 1.6

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