FIGURE EX17.28 shows the circular wave fronts emitted by two wave sources.
a. Are these sources in phase or out of phase? Explain.
b. Make a table with rows labeled P, Q, and R and columns labeled r₁, r₂, Δr, and C/D. Fill in the table for points P, Q, and R, giving the distances as multiples of λ and indicating, with a C or a D, whether the interference at that point is constructive or destructive.

Transcribed Image Text:

FIGURE EX17.28 R.