A slide projector produces 500 times enlarged image of a slide on a screen 10 m awa
Channel: Doubtnut
Date: 2020-06-28

A slide projector produces 500 times enlarged image of a slide on a screen 10 m away. Assume that the projector consists of a single convex lens used for magnification. If the screen is moved 2.0 m closer, by what distance should the slide be moved towards or away from the lens so that the image remains focussed on the screen ? What is the magification in this case ?