1
Q
what are waves?
A
transfer of energy without transferring matter
2
Q
Transverse waves
A
particles vibrate perpendicular to direction of wave
3
Q
longitudinal waves
A
particles vibrate parallel to the direction of the wave
4
Q
𝑣=
wavespeed
A
𝑓𝜆
4
Q
Phase difference
A
how “out of step” 2 waves are from each other
difference in position of 2 waves
5
Q
In phase =
A
0° or 360° (or multiples)
5
Q
Out of phase=
A
180° (completely opposite)
6
Q
A
7
Q
polarisation is for
A
transverse waves only
8
Q
polarised light
A
vibrates in one direction only
9
Q
unpolarised light
A
vibrates in all directions perpendicular to direction of travel.
AS level physics
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