Plane Mirrors and the Law of Reflection Dee Luo and Jasmine Raskas

Part 1 Purpose: Determine the relationship between the angle of incidence and angle of reflection. Hypothesis: The angle of incidence is the same as the angle of reflection.

Part 1 - Diagrams Plane Mirror Angle of Incidence Angel of Reflection Incidence Ray Reflection Ray

Part 1 - Diagrams Plane Mirror Polar Grid Light Source

Part 1 - Data

Part 1 - Graph

Part 1 – Mathematical Analysis θ R  Angle of Reflection θi  Angle of Incidence θ R ∝ θ I θ R = k θ I k = ( calculated by logger pro) θ R = (0.997) θ I

Part 1 – Error Analysis Accepted Value: 1 Experimental Value:.997 Absolute Error: |Acc Value-Exp Value| |1-.997| Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.997|/1* % Sources of Error: The angle of the mirror was not perpendicular to the laser. The markings on the given paper were not consistent.

Part 2 Purpose: Determine the relationship between the object distance and image distance. Hypothesis: The object distance will be equal to the image distance.

Part 2 - Diagrams Object DistanceImage Distance Object Image

Part 2 - Diagrams Plane Mirror Object Distance Object Image Distance

Part 2 - Data

Part 2 - Graph

Part 2 – Mathematical Analysis Do  Object Distance Di  Image Distance Di ∝ Do Di=k Do K=0.999 (calculated by logger pro) Di=(0.999) Do

Part 2 – Error Analysis Accepted Value: 1 Experimental Value:.999 Absolute Error: |Acc Value-Exp Value| |1-.999| Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.999|/1 * % Sources of Error: The mirror was difficult to see through It was hard to make the marking without moving the mirror The mirror was not completely perpendicular to the page

Part 3 Purpose: Determine the relationship between the object height and image height. Hypothesis: The object height will be equal to the image height.

Part 3 - Diagrams Object Height Image Height ObjectImage

Part 3 - Diagrams Plane Mirror Object Height Object Image Height

Part 3 - Data

Part 3 - Graph

Part 3 – Mathematical Analysis Ho  Object Height Hi  Image Height Hi ∝ Ho Hi=k Ho K=0.995 Hi=(0.995) Ho

Part 3 – Error Analysis Accepted Value: 1 Experimental Value:.995 Absolute Error: |Acc Value-Exp Value| |1-.995| Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.995|/1 * % Sources of Error: The mirror was difficult to see through It was hard to make the marking without moving the mirror The mirror was not completely perpendicular to the page