![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}} \\\\ $
![How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global](https://av.jpn.support.panasonic.com/support/global/cs/dsc/knowhow/common/img/l12/l12_01.jpg)
How Focal Length Affects Viewing Angle | Digital Camera Know-Hows | Digital Camera | Digital AV | Support | Panasonic Global
![Explain how an eye lens changes its focal length. How does it help in seeing near and distant objects? Explain how an eye lens changes its focal length. How does it help in seeing near and distant objects?](https://byjus-answer-creation.s3.amazonaws.com/uploads/7890Physics_62a9f5c38a09ec5f9ec41022%20%20a.jpg_img_upload_solution_2022-07-29%2010:05:01.130748.png)
Explain how an eye lens changes its focal length. How does it help in seeing near and distant objects?
![Figure(a) shows the basic structure of a human eye. Light refracts into the eye through the cornea and is then further redirected by a lens whose shape (and thus ability to focus Figure(a) shows the basic structure of a human eye. Light refracts into the eye through the cornea and is then further redirected by a lens whose shape (and thus ability to focus](https://haygot.s3.amazonaws.com/questions/1780567_e41b64923de94c67a79dbd4c353791db.jpg)