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Find the position of an object to get a virtual image atá distance of 25 cm from a convexmrror of focal length 20 cm​

Answer»

When an OBJECT is KEPT at a distance of 20 CM from a concave mirror, the image is formed at a distance of 10 cm. If the object is moved with a speed of 4 m/s, the speed with which the image moves is us-20 (A) 10 cm/sec (B) 1 m/sec (C) 4 m/sec (D) 0.4 m/sec. THANKS  Explanation:



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