point of incidence
← mirror
Step 4 - 6 Create an Incident ray (between 0º and 90º), then measure the angle of
reflection.
point of incidence
Repeat Step 4 - 6 for a different angle
point of incidence
Repeat Step 4 - 6 for a different angle
Data Table
Incident Angle
0º
Reflected Angle
Analysis
What was your hypothesis?
Was your hypothesis correct? Explain.
90º
What is the angle of the reflected ray when the incident ray is on the normal line (0º)?
Why is there no reflected ray when the incident ray is parallel to the surface of the mirror
(90º)?
The first law of reflection gives the relationship between the angle of incidence and the
angle of reflection. Based on your data table, what is the first law of reflection?
The second law of reflection states that the incident ray, the reflected ray and the
normal line all lie in the same plane (flat surface). What flat surface was used in this
investigation to demonstrate the second law of reflection?