The projection lens in a certain slide projector is a single thin lens. A slide 24.9 millimeter high is to be projected therefore that its image fills a screen 1.79 meter high. The slide-to-screen distance is 2.92 meter.
(a) Evaluate the focal length of the projection lens.
(b) Find how far from the slide should the lens of the projector be placed to form the image on the screen?