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Plane Mirrors and the Law of Reflection

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. Angel of Reflection.

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Plane Mirrors and the Law of Reflection

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

  2. 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.

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

  4. Part 1 - Diagrams Plane Mirror Polar Grid Light Source

  5. Part 1 - Data

  6. Part 1 - Graph

  7. Part 1 – Mathematical Analysis • θR Angle of Reflection • θiAngle of Incidence • θR ∝θI • θR = k θI • k = 0.997 ( calculated by logger pro) • θR = (0.997) θI

  8. Part 1 – Error Analysis Accepted Value: 1 Experimental Value: .997 • Absolute Error: |Acc Value-Exp Value| |1-.997| 0.003 • Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.997|/1* 100 0.3% Sources of Error: • The angle of the mirror was not perpendicular to the laser. • The markings on the given paper were not consistent.

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

  10. Part 2 - Diagrams Plane Mirror Image Object Image Distance Object Distance

  11. Part 2 - Diagrams Plane Mirror Image Distance Object Distance Object

  12. Part 2 - Data

  13. Part 2 - Graph

  14. 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

  15. Part 2 – Error Analysis Accepted Value: 1 Experimental Value: .999 • Absolute Error: |Acc Value-Exp Value| |1-.999| 0.001 • Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.999|/1 * 100 .01% 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

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

  17. Part 3 - Diagrams Plane Mirror Image Object Image Height Object Height

  18. Part 3 - Diagrams Plane Mirror Image Height Object Height Object

  19. Part 3 - Data

  20. Part 3 - Graph

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

  22. Part 3 – Error Analysis Accepted Value: 1 Experimental Value: .995 • Absolute Error: |Acc Value-Exp Value| |1-.995| 0.005 • Relative Error: |Acc Value-Exp Value|/Acc Value * 100 |1-.995|/1 * 100 .05% 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

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