Welcome in Collection of Solved Problems in Physics

This collection of Solved Problems in Physics is developed by Department of Physics Education, Faculty of Mathematics and Physics, Charles University in Prague since 2006.

The Collection contains tasks at various level in mechanics, electromagnetism, thermodynamics and optics. The tasks mostly do not contain the calculus (derivations and integrals), on the other hand they are not simple such as the use just one formula. Tasks have very detailed solution descriptions. Try to solve the task or at least some of its parts independently. You can use hints and task analysis (solution strategy).

Level and category of the task is indicated by an icon in the right upper corner.

Difficulty level

Level 1 – Lower secondary level Level 1 – Lower secondary level

Level 2 – Upper secondary level Level 2 – Upper secondary level

Level 3 – Advanced upper secondary level Level 3 – Advanced upper secondary level

Level 4 – Undergraduate level Level 4 – Undergraduate level


Qualitative task Qualitative task

Graphical task Graphical task

Task with unusual solution Task with unusual solution

Complex task Complex task

Task with theory Task with theory

Task requires extra constants Task requires extra constants

Tasks requiring identifying facts Tasks requiring identifying facts

Tasks focused on analysis Tasks focused on analysis

Tasks focused on synthesis Tasks focused on synthesis

Tasks requiring comparison and contradistinction Tasks requiring comparison and contradistinction

Tasks requiring categorization and classification Tasks requiring categorization and classification

Tasks to identify relationships between facts Tasks to identify relationships between facts

Tasks requiring abstraction and generalization Tasks requiring abstraction and generalization

Tasks aiming at specification Tasks aiming at specification

Tasks requiring routine calculations Tasks requiring routine calculations

Tasks requiring transformation of facts Tasks requiring transformation of facts

Tasks requiring interpretation,explanation or justification Tasks requiring interpretation,explanation or justification

Tasks requiring induction Tasks requiring induction

Tasks requiring deduction Tasks requiring deduction

Tasks aiming at proving, and verification  Tasks aiming at proving, and verification

Tasks requiring evaluation and assessment Tasks requiring evaluation and assessment

Challenging physics tasks Challenging physics tasks

Tasks requiring one’s own ideas Tasks requiring one’s own ideas


Send mail to administrator   Mail to administrator – with error notification, idea how to improve the collection, your attitude to quality and benefit of the collection, etc.


Tasks in English are translated from the Czech part of the Collection.The development of the Colection interface as well as translations of tasks was supported by projects FRVŠ (759 F6d/2008, 788 F6d/2010, FRVŠ 888 F6d/2011) a by IRP.


In case of problems or ideas how to improve the Collection please contact administrator.