Focal Length experiment readings

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SUMMARY

The discussion focuses on determining the focal length of a concave lens by combining it coaxially with a convex lens. The convex lens has a focal length of 15 cm, while the concave lens has a focal length of -30 cm (noting the convention for concave lenses). To find the effective focal length of the compound lens system, users are advised to plot readings on graph paper, where the slope of the straight line will yield the focal length of the concave lens.

PREREQUISITES
  • Understanding of lens types: convex and concave lenses
  • Knowledge of focal length calculations for lens systems
  • Familiarity with graphing techniques and slope determination
  • Basic principles of optics and light behavior
NEXT STEPS
  • Research the lens maker's equation for calculating focal lengths
  • Learn about the combination of lenses and effective focal length
  • Explore graphing techniques for plotting optical experiments
  • Study the principles of ray diagrams for lens systems
USEFUL FOR

Students in optics, physics educators, and anyone conducting experiments related to lens systems and focal lengths.

bishshoy007
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Hello, I need help with the lens experiment, the aim of which is to determine the focal length of a concave lens by combining it coaxially with a convex lens.

Given the focal length of the CONVEX lens is 15cm.
and the focal length of the CONCAVE lens is 30cm.

Can you give me a set of reading, plotting which on the graph paper the slope of the st. line shall give the CONCAVE lens' focal length.

Thanks in advance.
 
Science news on Phys.org
Don't you know how to calculate the focal length of a compound lens?

Zz.
 

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