Q. An equiconvex lens of glass of focal length 0.1 metre is cut along a plane perpendicular to principal axis into two equal parts. The ratio of focal length of new lenses formed is
A) $1\ :1$
B) $1\ :2$
C) $2\ :1$
D) $2\ :\frac{1}{2}$
Explanation
(a) Ratio of focal length of new plano convex lenses is 1:1
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.