Parameters of final image formed by lens system

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To compute the parameters of the final image formed by a lens system, one must determine the position, size, and nature of the image. The process involves applying the lens formula and magnification equations relevant to multiple lenses. It is essential to refer to class notes for guidance on handling the calculations for systems with more than one lens. Understanding the characteristics of real and virtual images, as well as their orientation, is crucial for accurate analysis. Mastery of these concepts will lead to successful completion of the homework problem.
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Homework Statement


Compute the following parameters of the final image formed by the lens system shown in the figure below
a) position
b) size
c) nature (Real, Virtual, Upright, Inverted, Etc.)
FullSizeRender.jpg

Homework Equations

The Attempt at a Solution


i am kind of lost at where to begin...
 
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Start by looking in your class notes concerning how to handle multiple lenses.
 
The book claims the answer is that all the magnitudes are the same because "the gravitational force on the penguin is the same". I'm having trouble understanding this. I thought the buoyant force was equal to the weight of the fluid displaced. Weight depends on mass which depends on density. Therefore, due to the differing densities the buoyant force will be different in each case? Is this incorrect?

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