Solving a Complex Problem: Can You Help?

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The discussion revolves around solving a complex optics problem using the spherical interface formula. The original poster calculated q as 15 cm but is confused because it does not match the expected answer of 23 cm. There is a suggestion to consider the flat end of the rod, indicating that additional factors may need to be included in the calculations. The conversation hints at the possibility of this being a homework problem, which could influence the approach to finding a solution. Clarifying the parameters and ensuring all elements of the problem are accounted for is essential for arriving at the correct answer.
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Does anyone know how to solve this problem? I tried using the spherical interface formula (n1/p)+(n2/q)=((n2-n2)/R) and I get q=15cm which I cannot seem to relate to the answer provided (23cm). Anyone know the correct way to approach this problem?
attachment.php?attachmentid=58375&stc=1&d=1367371157.jpg


Thanks.
 

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You probably need to account for the flat end of the rod as well.
 
sfphysics said:
Does anyone know how to solve this problem? I tried using the spherical interface formula (n1/p)+(n2/q)=((n2-n2)/R) and I get q=15cm which I cannot seem to relate to the answer provided (23cm). Anyone know the correct way to approach this problem?
[ IMG]https://www.physicsforums.com/attachment.php?attachmentid=58375&stc=1&d=1367371157[/PLAIN]

Thanks.
Is this a Homework problem?
 

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