cse • paper_1 • waves_oscillationscse-2008-subject-02-002
Thin-lens optics — UPSC CSE 2008 Physics PYQ
Buy PYQ Solution Manual →A convex lens of focal length 20 cm and a concave lens of focal length 10 cm are placed 20 cm apart. In between them an object is placed at a distance x from the convex lens. What is the value of x in cm so that the images formed by both of them coincide ?
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