# Problem: a. What is the focal length of the eye-lens system when viewing an object at infinity? Assume that the lens-retina distance is 2.0 cm . Follow the sign conventions.b. What is the focal length of the eye-lens system when viewing an object 32 cm from the eye? Assume that the lens-retina distance is 2.0 cm . Follow the sign conventions.

###### FREE Expert Solution

The lens equation:

$\overline{)\frac{\mathbf{1}}{{\mathbit{s}}_{\mathbit{o}}}{\mathbf{+}}\frac{\mathbf{1}}{{\mathbit{s}}_{\mathbit{i}}}{\mathbf{=}}\frac{\mathbf{1}}{\mathbit{f}}}$

a.

1/∞ + 1/2.0 = 1/f

###### Problem Details

a. What is the focal length of the eye-lens system when viewing an object at infinity? Assume that the lens-retina distance is 2.0 cm . Follow the sign conventions.

b. What is the focal length of the eye-lens system when viewing an object 32 cm from the eye? Assume that the lens-retina distance is 2.0 cm . Follow the sign conventions.

What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Thin Lens And Lens Maker Equations concept. You can view video lessons to learn Thin Lens And Lens Maker Equations. Or if you need more Thin Lens And Lens Maker Equations practice, you can also practice Thin Lens And Lens Maker Equations practice problems.