Two point sources are vibrating together (in phase) at the same frequency to produce a two-point source interference pattern. The diagram at the right depicts the two-point source interference pattern. The crests are represented by thick lines and the troughs by thin lines. Several points on the pattern are marked by a dot and labeled with a letter. Use the diagram to answer the following questions.
a. Which of the labeled points are antinodal points?
b. Which of the labeled points are nodal points?
c. Which of the labeled points are formed as a result of constructive interference?
d. Which of the labeled points are located on the central antinodal line?
e. Which of the labeled points are located on the first antinodal line?
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