written by
Gary Gladding
published by the University of llinois Physics Education Research Group
This is an interactive homework problem on the topic of ray optics. It presents this scenario: a distant object forms an image 2.8 meters in front of a slightly curved mirror. With only this information, the user must determine the radius of curvature of the mirror.
The problem was developed by a physics education researcher to help students with concept formation and strategic problem solving skills. It is accompanied by a Socratic-dialog "help" sequence that guides users through a full conceptual analysis before attempting the mathematics. It is part of a larger collection developed by the Illinois PER Group.
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![]() <a href="https://www.compadre.org/portal/items/detail.cfm?ID=6466">Gladding, Gary. Illinois PER Interactive Examples: Curved Mirror. Urbana: University of llinois Physics Education Research Group, June 16, 2006.</a>
![]() G. Gladding, (University of llinois Physics Education Research Group, Urbana, 2002), WWW Document, (https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02).
![]() G. Gladding, Illinois PER Interactive Examples: Curved Mirror (University of llinois Physics Education Research Group, Urbana, 2002), <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02>.
![]() Gladding, G. (2006, June 16). Illinois PER Interactive Examples: Curved Mirror. Retrieved May 1, 2025, from University of llinois Physics Education Research Group: https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02
![]() Gladding, Gary. Illinois PER Interactive Examples: Curved Mirror. Urbana: University of llinois Physics Education Research Group, June 16, 2006. https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02 (accessed 1 May 2025).
![]() Gladding, Gary. Illinois PER Interactive Examples: Curved Mirror. Urbana: University of llinois Physics Education Research Group, 2002. 16 June 2006. 1 May 2025 <https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02>.
![]() @misc{
Author = "Gary Gladding",
Title = {Illinois PER Interactive Examples: Curved Mirror},
Publisher = {University of llinois Physics Education Research Group},
Volume = {2025},
Number = {1 May 2025},
Month = {June 16, 2006},
Year = {2002}
}
![]() %A Gary Gladding %T Illinois PER Interactive Examples: Curved Mirror %D June 16, 2006 %I University of llinois Physics Education Research Group %C Urbana %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02 %O text/html ![]() %0 Electronic Source %A Gladding, Gary %D June 16, 2006 %T Illinois PER Interactive Examples: Curved Mirror %I University of llinois Physics Education Research Group %V 2025 %N 1 May 2025 %8 June 16, 2006 %9 text/html %U https://ie.per.physics.illinois.edu/per/ie/ie.pl?phys102/ie/08/02 Disclaimer: ComPADRE offers citation styles as a guide only. We cannot offer interpretations about citations as this is an automated procedure. Please refer to the style manuals in the Citation Source Information area for clarifications.
Citation Source Information
The AIP Style presented is based on information from the AIP Style Manual. The APA Style presented is based on information from APA Style.org: Electronic References. The Chicago Style presented is based on information from Examples of Chicago-Style Documentation. The MLA Style presented is based on information from the MLA FAQ. Illinois PER Interactive Examples: Curved Mirror:
Covers the Same Topic As
Illinois PER Interactive Examples: Three Mirrors
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