Particles and Waves

Question 1

Diffraction

Answer 1

Occurs when waves encounter a barrier, and bend around it

Question 2

Amount of diffraction depends on

Answer 2

Wavelength of the waves
As wavelength increases so too does diffraction

Question 3

Middle line in an interference pattern

Answer 3

Central maximum

Question 4

interference waves must be

Answer 4

Coherent

Question 5

Interference

Answer 5

Is the property which defines wave motion

Question 6

Constructive interference

Answer 6

Where peaks overlaps with peaks and troughs overlap with troughs
IN PHASE

Question 7

Destructive interference

Answer 7

When peaks overlap with troughs
OUT OF PHASE

Question 8

Coherent

Answer 8

Same speed, frequency and wavelength
Constant phase relationship

Question 9

Path length

Answer 9

Shortest distance between the source and maximum/minimum
Certain number of whole or half wavelengths

Question 10

Path difference

Answer 10

Mathematical difference between the path lengths

Question 11

White light and prism

Answer 11

Refraction occurs with a single spectrum of light
ROYHBIV long wavelength refract less than short