Finding Focal Lengths of Microscope Lenses

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SUMMARY

The discussion focuses on calculating the focal lengths of microscope lenses given a tube length of 25.0 cm and a total magnification of 500 times, achieved through a combination of a 50 times magnification by the objective lens and a 10 times magnification by the eyepiece. The relevant magnification equation, M = -q / p, is highlighted as a critical tool for solving the problem. Participants emphasize the need to apply this equation effectively to determine the unknown focal lengths of both lenses.

PREREQUISITES
  • Understanding of optical physics principles
  • Familiarity with magnification equations
  • Knowledge of lens formulas and focal lengths
  • Basic algebra for solving equations
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  • Study the lens maker's equation for calculating focal lengths
  • Learn about the relationship between object distance, image distance, and magnification
  • Explore the concept of total magnification in compound microscopes
  • Research practical applications of microscope optics in laboratory settings
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Students in physics or optical engineering, microscope manufacturers, and anyone involved in designing or utilizing optical instruments for scientific research.

shorty_47_2000
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Can someone tell me what sort of equation I would use for this question, I can't use the magnification as I have two unknowns. At least I don't know how to apply the magnification equation to this question.

A microscope is made in a tube 25.0cm long. It magnifies 5.00 x 10 to the 2 times, 50.0 times by the objective lens and 10 times by the eyepiece. What is the focal length of the two lenses?
 
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What do you need to get greater magnification, a wider objective lens? :bugeye:
 
magnification is given by the eq. M = -q / p

see if that helps
 

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