Q. 2

The muscles of a normal eye are least strained when the eye is focussed on an object
A. far away from the eye

B. very close to the eye

C. at about 25 cm from the eye

D. at about 1 m from the eye.

Answer :

Human eye lens has fibrous, jelly-like materials

Ciliary muscles change the curvature of the eye lens depending upon the distance of the object

that changes the focal length.

When the object is close to eye, the contraction required is more since the curvature of eye lens

has to change, and when the object is distance, less contraction of ciliary muscles takes place.

Rate this question :

How useful is this solution?
We strive to provide quality solutions. Please rate us to serve you better.
Related Videos
Stereo Isomerism (Optical) | Mastering important conceptsStereo Isomerism (Optical) | Mastering important conceptsStereo Isomerism (Optical) | Mastering important concepts62 mins
Try our Mini CourseMaster Important Topics in 7 DaysLearn from IITians, NITians, Doctors & Academic Experts
Dedicated counsellor for each student
24X7 Doubt Resolution
Daily Report Card
Detailed Performance Evaluation
view all courses