Practice Question

1.State what is meant by the term reflection

Reflection is when a wave hits a boundary in a medium and bounces off the surface, without changing speed or wavelength.

2. State the law of reflection

Angle of incidence = Angle of reflection

3. Write a method explaining how you can prove the law of reflection.

Use the apparatus as shown below:

Move the ray box from side to side, to select different values for the angle of incidence. At each angle of incidence, measure the angle of reflection, using a protractor. 

Record your results in a table. 

In all cases the angle of incidence should equal the angle of reflection.