CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
Question

Why does the eye need to change the focal length of the eye lens?


A

To neglect the chromatic aberration

No worries! We‘ve got your back. Try BYJU‘S free classes today!
B

When object distance changes, to form the image at retina

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
C

As the position of retina keeps on changing

No worries! We‘ve got your back. Try BYJU‘S free classes today!
D

To keep the eye clean and active

No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is B

When object distance changes, to form the image at retina


The dimension of eye is fixed so, the position of retina is fixed. For focusing on objects at various distances and getting their images at retina itself we need to change the focal length of the eye lens. Ciliary muscles does that by contracting and expanding.


flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Power of Accommodation and Defects
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon