![Which part of the human eye controls the focus of the eye by varying its thickness? A.Ciliary muscles B.Iris C.Pupil D.Retina Which part of the human eye controls the focus of the eye by varying its thickness? A.Ciliary muscles B.Iris C.Pupil D.Retina](https://www.vedantu.com/question-sets/1350086d-3f12-4bb7-840c-d779a907b5877459014746314103569.png)
Which part of the human eye controls the focus of the eye by varying its thickness? A.Ciliary muscles B.Iris C.Pupil D.Retina
![The focal length of a normal eye-lens is about:$(a){\\text{ 1mm}} \\\\(b){\\text{ 2cm}} \\\\(c){\\text{ 25cm}} \\\\(d){\\text{ 1m}} \\\\ $ The focal length of a normal eye-lens is about:$(a){\\text{ 1mm}} \\\\(b){\\text{ 2cm}} \\\\(c){\\text{ 25cm}} \\\\(d){\\text{ 1m}} \\\\ $](https://www.vedantu.com/question-sets/23766a8b-704b-4a02-9898-45078c04e63b6462374204689754885.png)
The focal length of a normal eye-lens is about:$(a){\\text{ 1mm}} \\\\(b){\\text{ 2cm}} \\\\(c){\\text{ 25cm}} \\\\(d){\\text{ 1m}} \\\\ $
![Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Eye Accommodation: Interactive Java Tutorial Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Eye Accommodation: Interactive Java Tutorial](https://micro.magnet.fsu.edu/primer/java/humanvision/accommodation/humanvisionfigure1.jpg)
Molecular Expressions Microscopy Primer: Physics of Light and Color - Human Eye Accommodation: Interactive Java Tutorial
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