Physics
Which lens is converging —
(i) an equiconcave lens or an equiconvex lens?
(ii) a concavo-convex lens or a convexo-concave lens?
Related Questions
Identify the incorrect statement :
- if the medium on both sides of a lens is same, its first and second focal lengths are equal, i.e. f1 = f2 (numerically).
- when we say focal length of a lens, we mean the first focal length of the lens.
- a convex lens has a real focus.
- a concave lens has a virtual focus.
What is a lens?
State the condition when a lens is called equiconvex or equi-concave.
Define the term focal length of a lens.