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Predict/Explain Octopus Eyes To focus its eyes, an octopus does not change the shape of its lens, as is the case in humans. Instead, an octopus moves its rigid lens back and forth, as in a camera. This changes the distance from the lens to the retina andbrings an object into focus. (a) If an object moves closer to an octopus, must the octopus move its lens closer to or farther from itsretina to keep the object in focus? (b) Choose the best explanationfrom among the following:I. The lens must move closer to the retina-that is, farther awayfrom the object-to compensate for the object moving closerto the eye.II. When the object moves closer to the eye, the image producedby the lens will be farther behind the lens; therefore, the lensmust move farther from the retina.

a) fartherb) Option $(II) :$

Physics 103

Chapter 27

Optical lnstruments

Wave Optics

Rutgers, The State University of New Jersey

Hope College

University of Sheffield

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Okay, so in this problem, we have an octopus. I So picture this. We have here object, and we can decompose the eye of the octopus as fig Linz, though well, redirect the light race and a retina where the image is going to be four. So in the proper situation, we have the image off the object being formed on the retina. So if we bring the object closer to the eye, the new image is going to be formed farther behind the retina. So we have a gap, and here there, we need to correct. So we ordered to correct his gap. We just need to move the lens farther from directing does the chronic. The answer to the first item is just fodder from the right to know. And the second item, The best explanation is going to be this 2nd 1 because the 2nd 1 say's when the object moves closer to the eye, the image produced by the lens will be far behind the lens. Therefore, the lens must move for far from the retina. And this is exactly what we just described in here. And that's the final answer. Thanks for

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