Answer: Resultant displacement = algebraic sum of individual displacements.
- A They permanently destroy each other and vanish largely overall
- B Resultant displacement = algebraic sum of individual displacements
- C Both waves come to a complete stop at the point of meeting in most cases
- D They merge permanently into a single wave thereafter under typical conditions
Correct answer: B. Resultant displacement = algebraic sum of individual displacements
Explanation: Superposition principle: when waves overlap, total displacement = sum of individual displacements at each point.
A standing wave forms from two identical waves travelling in opposite directions and interfering; nodes (always zero displacement) and antinodes (maximum displacement) stay fixed in place, unlike a travelling wave where the whole pattern moves.
Concept context
Wave types, superposition, standing waves, Doppler effect, and sound intensity.