Question

What is photograph enlarger? How does it work?

Answer 1

Ans.  PHOTOGRAPH ENLARGER
In the case of photograph enlarger, object is placed at distance of more than F but less than 2F. In this way, we get a real, inverted and enlarged images as shown in the figure given below:
The working principle of photograph enlarge is basically the same as that of a slide projector It uses a convex lens to produce a real, magnified and inverted image of the film on a photographic paper.