Superposition

Question 1

Principle of superposition

Answer 1

When 2 or more waves of the same kind overlap, the resultant displacement at any point at any instant is given by the vector sum of the individual displacements that each individual wave would cause at that point at that instant

Question 2

Diffraction

Answer 2

The spreading of waves after passing through small apertures or slits

Question 3

Interference

Answer 3

The superposing or overlapping of 2 or more waves to give a resultant wave whose displacement is given by the principle of superposition which states that displacement of the resultant wave at any point is the vector sum of the displacements of the individual waves at that point

Question 4

Constructive interference

Answer 4

Occurs at a point when 2 waves meet in phase at the point. The resultant amplitude of the oscillation is therefore a maximum

Question 5

Coherence

Answer 5

Sources having constant phase difference