bradbonsall361 bradbonsall361

23-01-2024
Physics

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A luminous object is placed at a distance of 30 cm from a convex lens with a focal length of 20 cm. On the side of the lens, at what distance from the lens must a convex mirror be placed?

a) 10 cm
b) 15 cm
c) 20 cm
d) 30 cm

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