Concept:Superposition of waves creates interference patterns; dispersion is not a result of superposition.
Explanation:When two waves meet, their displacements combine algebraically at each point.
Nodal lines are produced where destructive interference causes zero or minimum displacement.
Anti-nodal lines are produced where constructive interference causes maximum displacement.
When two identical waves travel in opposite directions, their superposition gives stationary waves with fixed nodes and antinodes.
Dispersion is different because it involves waves of different frequencies travelling at different speeds in a medium.
Dispersion does not require two waves to be superposed, so it is not a possible result of superposition.
Answer:D. dispersion