A concave mirror (R = 56.0 cm) is used to project a transparent slide onto a wall. The slide is located at a distance of 31.0 cm from the mirror
(a) How far from the wall should the mirror be located?
(b) The height of the object on slide is 0.95 cm. What is the height of the image?
(c) How should the slide be oriented, so that the picture on the wall looks normal?