A convex lens of focal length 20 cm produces 3 times magnified real image of an object. Find the position of the object Share with your friends Share 0 Ravi G answered this Kindly refer the following link. https://www.meritnation.com/ask-answer/question/a-convex-lens-of-focal-length-20-cm-produces-3-times-magnifi/light-reflection-and-refraction/7140403 0 View Full Answer mohit40 answered this since the image is real the magnification is -3.now v/u=-3u= v/-3now substitute the value of u in lens formula1/20=1/v -(-3/v)1/20=4/vv=80cmtherefore u=-80/3 =-26.67(approx)Hope it helps! 0