Question

"Maximum constructive interference occurs at the

(1)
antinodes A, C, and E

(3)
antinodes B and D
(2)
nodes A, C, and E

(4)
nodes B and D
"

Answer 1

The diagram you posted above represents a standing wave on a string. The maximum constructive interference occurs at the antinodes B and D. The correct answer choice is number 3, antinodes B & D. Be careful when choosing as the above choices are not in correct order. Instead of 1,2,3,4, the choices above are 1,3,2, and 4.