Maths, Physics Revision Physicss Maths Physics Physics A Level Physics Home Maths Maths Revision hut Ray Diagrams In Fig 2 the object is  between F and 2F. The image  Is further  away, Enlarged,  inverted and real It is possible to predict the size and position of of an  image in a convex lens by constructing  an accurate ray diagram In Fig 1 the object is at 2F. The image is at 2F on the  other side,same size as the image, inverted, same distance  away and real. Play the diagrams Fig. 1 Fig. 2 In Fig.3 the  object is beyond 2F. The image is  nearer,diminished, inverted and real Fig 3 In Fig 4 the  image is between F and the lens.  This time the rays  will not meet  behind the lens so they have to be  extended back in front of the lens (same side as the  object). They meet  and produce a magnified, upright, virtual image. Fig4 A real image is on the opposite side of the lens to the object and can be projected onto a screen and is formed by real  rays A virtual image is on the same side as the object and cannot be projected. Virtual images are formed by virtual rays Concave mirror