Q18. A luminous object is placed at a distance of 30cm from the convex lens of focal length 20cm. On the other side of the lens, at what distance from the lens, a convex mirror of radius of curvature 10cm must be placed to have an upright image of the object coinciding with it:Physics — Optics, Nature of Light and Optical Instruments — Question 18 of 155A. 12cm B. 30cm C. 50cm D. 60cm Practice more Physics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →