Wave Phenomena - Interference

Question 1

Interference

Answer 1

The combination of two or more waves of the same type

Question 2

Coherence

Answer 2

Sources are coherent if they maintained a fixed phase relationship (and are polarised in the same plane)

Question 3

Principle of Superposition

Answer 3

“The resultant displacement of 2 or more waves at a point is equal to the vector sum of their individual displacements at the point”

Question 4

Maxima

Answer 4

Waves meet with 0° phase difference, resulting constrictive superposition occurs producing a point of maximum amplitude

Question 5

Minima

Answer 5

Waves meet with 180° phase difference, resulting in destructive superposition, producing a point/region of minimum amplitude