An equiconvex lens of glass of focal length 0.1m is cut along a plane perpendicular to principle 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) \[2:\frac{1}{2}\]
Correct Answer:
A
Solution :
Ratio of focal length of new plano-convex lenses is 1 : 1.