– In Bi-concave or double concave lens …..
A. Both surfaces of a lens are concave
B. One surface of the lens is concave and another surface is plane
C. One surface of the lens is convex and another surface is concave
D. One surface of the lens is convex and the other is plane
Answer:A
– In Bi-concave or double concave lens …..
A. Both surfaces of a lens are concave B. One surface of the lens is concave and another surface is plane C. One surface of the lens is convex and another surface is concave D. One surface of the lens is convex and the other is plane