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The focal length of the human eye is approximately 1.7 cm. What is the f-number for...

The focal length of the human eye is approximately 1.7 cm. What is the f-number for the human eye in bright light, when the pupil diameter is 3.0mm ? What is the f-number in dim light, when the pupil diameter has expanded to 7.0mm ?

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Answer: The fnumber for human eye in bright light is Net = 17 mm 3.0mm = 5.666 N = 5.7. The f-number for the human eye in dim

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