need help on physics hw?

Question

1. wats the relationship between the angle of incidence and the angle of reflection in each case

2. at what angle of incidence do the incident ray and reflected ray travel along the same path

3. if the angle of the incidence is doubled, what happens to the angle of reflection and why

plz dont flame me

Answer 1

I am assuming you are NOT talking about 'refraction'
1. Angle of incidence is always equal to the angle of reflection on a perfectly reflecting surface.
2. Angle of incidence and angle of reflection travel in the same path if the angle of incidence is 90 degrees (same path, but opposite direction)
3. Look at point 1

Answer 2

Equal. From which it follows that the angle of incidence for equal angle of reflection is perpendicular to the surface, and if you double one angle, you will double the other.