Refraction
1 mark · EasyName the line that is always drawn at right angles to the barrier when showing reflection or refraction of waves.
Work this out on paper, then compare with the answer and worked solution below. With a free account you can submit written answers for marking.
Show answer
The normal
Also accept: normal
Common mistakes: mirror; boundary
Show mark scheme and worked solution
Marking points
B1 · 1 mark · Correctly names the normal.
Worked solution
The line is called the normal.