PHYS 102 :: Physics Illinois :: University of Illinois at Urbana-Champaign

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Prof. Chemla will be out of town March 30 - April 1. There will be no 3-4pm office houron Monday. Prof. Kuhlman will give Lects. 18 and 19 in his place. 

The midterm exam 2 has been graded and scores uploaded. The raw class mean was 62%, and was scaled to 75%.  


Midterm exam 3 will be on Thursday, Apr. 16, and will cover material from Lect. 13 (motional EMF & Lenz' law) - 19 (refraction & lenses). We strongly recommend you begin reviewing material early. Here are some resources to help you study:

  1. A formula sheet can be found here. This will be the same set of formulas given to you on the exams.
  2. A study sheet reviewing the different right hand rules can be found here.
  3. Practice exams from past semesters can be found here. Please be aware that different material was covered in semesters prior to FA14, so not all questions may be relevant. Video solutions to the FA13 exams are available in byteshelf (scroll to the very bottom of the main menu). Written solutions to selected midterm exams are available on Prof. Oono's site
  4. A list of extra practice problems from the textbook can be found here. The textbook has answers to all the odd-numbered problems. This list will be updated periodically. 
  5. Video solutions to selected homework problems in byteshelfSimply click on the "Help" button next to the problem. 

Some general comments on approaching physics exams:

  1. Physics emphasizes conceptual understanding and problem solving skills, NOT memorization of facts. How well you do in the exams will depend on how you practice both skills when you review.
  2. Although math skills are important to solving physics problems, they should never replace a strong understanding of concepts. All problems should be approached starting from a firm conceptual basis, as opposed to “searching for the magic equation”.  

With that in mind, here are some tips for studying for a physics exam:

  1. Review concepts. Pre-lectures, lecture slides, the textbook, and the discussion summaries are good places to review fundamental concepts.
  2. Practice solving problems. Past midterm exams are available for practice, as are extra textbook problems. Approach these questions from a conceptual basis first before working through any math. Review different types of problems, ranging from more conceptual-based (ex: lecture ACTs) to calculation-based (ex: Homework).
  3. Understand the formulas. Study the equation sheet and make sure you understand what each symbol represents, and when (and when not) to use an equation. Some formulas apply to specific situations only.
  4. Ask questions. Mastery of a problem means understanding the underlying concepts and being able to retrace each logical and/or math step(s) to the final answer. Getting the correct answer does not necessarily mean understanding how to solve a problem. Use office hours and review sessions to fill any gaps in the steps to solving problems. 


Please see the course description for an explanation of how this course works. It may seem complicated at first, but all the pieces do work together to enhance understanding. The course description also gives important details on our policies for missed exams, labs & quizzes. Also, please consult the syllabus to help you keep track of what is due when.


We will be using i>clickers in every lecture. You can use either the older v1 or the newer v2 i>clickers. If you have not already done so, please register your clicker by visiting Having another student answer questions using your clicker is considered cheating.

Excused Absences

The only course components eligible to be issued a grade of EX are discussions, labs and exams (except for the final). Please submit your excused absence no later than 14 days from your absence via the Excused Absences application. The count begins the day of your absence.For more information, please read the course description page.