State two differences between a convex and a concave lens.
Convex lens | Concave lens |
Answer variants:
Images may be
real and
inverted or
virtual and erect
Image is
always
virtual and
erect
Lenses that are
thicker
in the middle
than at the edges
Image is
virtual
and real
Size of the
image
is negligible
Lenses that are
thinner
in the middle
than at the edges