Plss do this question plss: 7. A convex mirror forms an image one-fourth the size of the object. If the distance of the object is 0.5 m, the focal length of the mirror is (1) 0.17m (2) 1.5m (3) 0.4 m (4) 3 m Share with your friends Share 2 Anshika Kannozia answered this 0.4 -6 View Full Answer