Light emitted by a source propagates along rays in all directions.
When light strikes a surface, part of the light is reflected. The angle of incidence is the angle between the incident ray and the normal (perpendicular) to the surface. The angle of
reflection is the angle between the reflected ray and the normal
Law of reflection: Angle of incidence = Angle of reflection.
The law of reflection may be derived from Fermats principle, which states that in traveling between two points, light follows the path of shortest time.
A plane mirror has a polished surface that is perfectly reflecting.
The image formed by a plane mirror has the same size as the object, and is at the same distance from the mirror as the object.
Reflection of Light
Lecture Slides are screen-captured images of important points in the lecture. Students can download and print out these lecture slide images to do practice problems as well as take notes while watching the lecture.
The book offers a complete review of your AP course, strategies to give you the edge on test day, and plenty of practice with AP-style test questions. It includes full length practice exams modeled on the real test and all the terms and concepts you need to know.
This book includes a review of all the topics tested including vectors, kinematics, fluid mechanics, optics and nuclear physics. Additionally, the book includes two full length tests made complete with descriptive solutions, and quick study tables for Physics B formulas and equations.