Question 20
SoundThe air column as shown in the figure above is set into vibration by the tuning fork. In this state of resonance, the waves in the air column will be
- A.stationary and transverse
- B.stationary and longitudinal
- C.progressive and transverse
- D.progressive and longitudinal.
Show the answer and explanation
Answer: B (stationary and longitudinal)
Explanation
Sound waves in air are longitudinal, and at resonance the incident and reflected waves form a stationary wave in the column.