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Consider a bi-convex lens with a diameter of 5 cm and
zero thickness at its edges. A point object on the optical
axis produces a real image on the opposite side. Both
objects and images distances are 30 cm. The lens has a
refractive index of 1.52. Using the equivalence of
optical paths through the center and edge of the lens,
determine the thickness of the lens at its center.
30 ст
30 ст
0.52 cm
0.45 cm
0.34 cm
O 0.4 cm
0.5 cm
0.31 cm

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