CBSE Class 10 Science 2018 · Paper 31/1 · Question 5

The mirror is a convex mirror. Ray diagram (see the figure): an object AB stands in front of the convex mirror, with the pole P on the mirror and the principal focus F and centre of curvature C behind it. A ray from A parallel to the principal axis is reflected so that it appears to come from F; a ray from A directed towards C is reflected back along its own path. The reflected rays diverge, and their backward extensions (dashed) meet behind the mirror at A′, between P and F. A′B′ is the image: virtual, erect and diminished. Arrows mark the direction of every ray.