Q. Which of the following is correct for lens focusing while seeing distant object?
A) Tightly stretched suspensory ligament and rounded lens
B) Contracted ciliary muscles and rounded lens
C) Relaxed ciliary muscles and tightly stretched suspensory ligament
D) Contracted ciliary muscles and relaxed suspensory ligaments
Explanation
Human eyes have remarkable power of accommodation by changing the convexity of the lens. Due to action of the muscles of ciliary body and suspensory ligament the focal length of the lens can be changed. Then the objects can be focused in different intensity of light from varying distances. For accommodation of distant objects, ciliary muscles relaxed and suspensory ligaments tightly stretched.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.