Lesson 9 Flashcards
When two point sources create waves of the same frequency (and wavelength) in a uniform medium with no barriers resulting in a
Two dimensional standing wave
True or False: circular waves that are created by a point source use solid lines to show crests and dotted lines to show troughs?
True
_____ will occur at point where either two crests or two troughs cross
Constructive interference
____ will occur at point where a crest and trough cross
Destructive interference
The points of destructive interference are ____ and the point of constructive interference are ____
Nodes and antinodes
The pattern of nodal and anti-nodal lines is called an
Interference pattern
______ frequency of the source will decrease wavelength, resulting in more nodal lines
Increasing
_______ frequency of the source will increase wavelength, resulting in less nodal lines.
Decreasing
Increasing the distance between the sources will _____ the number of nodal lines
Increase
Decreasing the distance between the sources will _____ the number of nodal lines
Decreasing
The path length difference between two point sources and a point on a nodal line is ….
Given by the absolute value of the difference in length between the path from the two pint sources to a point
