Which of the following about the
uses of a concave lens is not correct?
Concave lenses work to make
something look smaller, so they're not quite as common as convex lenses.
When stores put mirrors up
around the shop to help employees see if people
are shoplifting, they use concave
Many doors include a small
lens put into the door that allows people to see who
is outside without having to open
A photograph enlarger uses a concave lens to
produce on photographic paper
real, magnified and inverted image
of the film.
Convex lens can be used as the
lens for those short-sighted people.