2020 · Q101
Which of the following lenses will bend the light rays through largest angle?
General KnowledgePhysics
- ALens with power +2.0 D
- BLens with power +2.5 D
- CLens with power –1.5 D
- DLens with power –2.0 D
Explanation
A lens's light-bending power is its dioptric power: higher power bends rays through a larger angle. Among the options, +2.5 D is the highest power — the concave lenses of -1.5 D and -2.0 D diverge rays rather than converge them. The +2.5 D lens bends light the most.