Question

Make a table with rows labeled PQ and R and columns labeled 1.2. Δ and C/D Fill in the table for points P, Q, and R giving the distances as multiples of λ and indicating, with a Cor a D, whether the interference at that point is constructive or destructive Reset Help T1 r2 Ar C/D 2A 3A

Answer 1

	r1	r2	$\Delta r$	C/D
P	$2 \lambda$	$3 \lambda$	$\lambda$	D
Q	$3 \lambda$	$(3/2) \lambda$	$(3/2) \lambda$	C
R	$(5/2) \lambda$	$3 \lambda$	$(1/2) \lambda$	C