A slides projector has a lens with a focal length of 15cm. If the slide is 5cm x 5cm in size and should appear when proj
Posted: Mon May 09, 2022 7:01 pm
A slides projector has a lens with a focal length of 15cm. If the slide is 5cm x 5cm in size and should appear when projected with a size of 1m x 1m. Calculate at what distance from the lens the screen should be placed.