10 SUPERPOSITION

Question 1

Principle of Superposition

Answer 1

1 when two or more waves of the same kind overlap,
2 the resultant displacement at any point at any instant
3 is given by the vector sum of the individual displacement that
4 each wave would cause at that point at that instant.

Question 2

for waves of same v & λ, predict constructive or destructive interference via 2 methods

Answer 2

1 phase difference

2 Path difference

Question 3

SOURCES IN PHASE Path difference for constructive and destructive interference

Answer 3

constructive int. path diff: mλ

destructive int. path diff: (m+0.5)λ

Question 4

phase difference for constructive and destructive interference

Answer 4

constructive int. phase diff: 0246π

destructive int. phase diff: 1357π

Question 5

SOURCES ANTI-PHASE Path difference for constructive and destructive interference

Answer 5

constructive int. path diff: (m-0.5)λ
destructive int. path diff: mλ
(conditions interchanged as compared to sources in phase)