8. Two-Source Interface

Question 1

What is Two-source Interference?

Answer 1

Two-source interference is when the waves from two sources interfere to produce a pattern.

Question 2

How do you get a clear interference pattern from two-source interference?

Answer 2

To get a clear interference pattern from two-source interference, the waves from the two sources must be monochromatic and coherent.

Question 3

At what points would you get constructive interference from two-source interference?

Answer 3

You would get constructive interference from two-source interference when the path difference is a whole number of wavelengths or at an equal distance from the two sources.

Question 4

At what points would you get Destructive interference from two-source interference?

Answer 4

You would get destructive interference when the path difference is half a wavelength, one and a half wavelengths, two and a half wavelengths, etc…

Question 5

What are the points of constructive interference called?

Answer 5

Maxima

Question 6

What are the points of destructive interference called?

Answer 6

Minima