Question 13. A resonating column of air contains (a) Stationary longitudinal waves (b) Stationary transverse waves (c) Transverse progressive waves (d) Longitudinal progressive waves Answer
Complete answer: In a resonating air column, longitudinal standing waves are formed. A standing wave is formed when two waves of same amplitude and same frequency, moving with same speed but opposite in direction interfere. A standing wave does not propagate in any direction and it oscillates at one place.
