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Problem 62 Easy Difficulty

If a typical eyeball is 2.00 cm long and has a pupil opening that can range from about 2.00 mm to 6.00 mm, what are (a) the focal length of the eye when it is focused on objects 1.00 $\mathrm{m}$ away, (b) the smallest $f$ -number of the eye when it is focused on objects 1.00 $\mathrm{m}$ away, and $(\mathrm{c})$ the largest $f-$ number of the eye when it is focused on objects 1.00 $\mathrm{m}$ away?

Answer

a. f=0.0196 m
b. 3.27
c. 9.80

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Top Physics 103 Educators
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Cornell University

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Zachary M.

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Video Transcript

{'transcript': "power is given by one of s because why would be just a few for the camera? The object distances infinity on. He made his form at the distance from the lens. Kiddo, Whatever we consider four and zero want a we don't so that becomes 56 Maker in verse. It was 56 about that. Now, In the second case, if we choose power at the object distance to be 0.2 m on the immense distance K's as it applies to what a meter. Then doing the same competition. We will find the power to be 61 doctor on. In the third case, if you have the object at the same distance, however, your images Marty one. So that's a negative sign on its one middle of a. Then, in this particular case, even the same calculation you find the power before"}

Indian Institute of Technology Kharagpur
Top Physics 103 Educators
Elyse G.

Cornell University

Farnaz M.

Other Schools

Zachary M.

Hope College

Aspen F.

University of Sheffield