A certain LCD projector contains a single thin lens. An object 24.0 mm high is to be projected so that its image fills a screen 1.86 m high. The object-to-screen distance is 3.07 m.
(a) Determine the focal length of the projection lens.
in mm
(b) How far from the object should the lens of the projector be placed to form the image on the screen?
in mm