interference

Question 1

What is interference evidence for?

Answer 1

the wave model of light

Question 2

What relationship do coherent waves have?

Answer 2

constant phase

Question 3

What is frequency?

Answer 3

number of waves per second (Hz)

Question 4

What is wavelength?

Answer 4

length of the wave (m)

Question 5

What is the period of a wave?

Answer 5

the amount of time jut takes for a wave to be produced or pass a point (s)

Question 6

Phase difference of constructive waves?

Answer 6

waves meet completely in phase with each other, constructively interfere

Question 7

Phase difference of destructive waves?

Answer 7

waves meet completely out of phase with each other, destructively interfere

Question 8

When are maxima and minima produced?

Answer 8

When the path difference between waves is a whole number of wavelengths or an odd number of half wavelengths respectively

Question 9

Relationship for maxima caused by grating?

Answer 9

m(wavelength)=dsin(angle)

Question 10

How to find ‘d’?

Answer 10

divide 1mm by the number of lines per mm