JEE Main & Advanced
Physics
Ray Optics
Question Bank
Refraction at Curved Surface
question_answer
An equiconvex lens of glass of focal length 0.1 metre is cut along a plane perpendicular to principle axis into two equal parts. The ratio of focal length of new lenses formed is [MP PET 1999; DPMT 2000]
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