1
Q
Crest/crest or trough/trough
A
Constructive interference
2
Q
When is there lots of diffraction?
A
Big wavelength that is bigger than opening of object
3
Q
When is there little diffraction?
A
Small wavelength that is smaller than the opening of object
4
Q
When there is light on the screen
A
Constructive
5
Q
When it’s dark on the screen
A
Destructive
6
Q
Young equation and meaning of variables
A
Wave lengths=dsin/n D=distance between slits L=length between slits and screen N=number of maxima or minima between 2 points X=distance between antinodes/nodes
7
Q
Minima
A
Node (destructive)
8
Q
Maxima
A
Antinode (constructive)
9
Q
Bigger the wavelength ___the diffraction
Bigger the wavelength ____ the refraction
A
Bigger
Smaller
10
Q
Crest meeting trough
A
Destructive interference
