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