The human eye is like a camera that has a lens with:
- A. fixed focal length and fixed aperture size.
- B. variable focal length and fixed aperture size.
- C. fixed focal length and variable aperture size.
- D. variable focal length and variable aperture size. ✓
Correct Answer: D. variable focal length and variable aperture size.
Explanation
The human eye lens can change its shape (accommodation) to vary the focal length, and the iris controls the pupil to provide a variable aperture size.
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