A standing wave ______?

ایک کھڑی لہر ______؟

Must be transverse

Has motionless points that are closer than half a wavelength

Can be constructed from two similar waves travelling in opposite directions

None of these

A standing wave is formed by the interference of two waves with the same frequency and amplitude moving in opposite directions.

This results in nodes (motionless points) and antinodes (points of maximum displacement) at fixed positions.