Physics (AS & A Level) · Oct / Nov 2021 · Paper 22 · Question 5

A tube is initially fully submerged in water. The axis of the tube is kept vertical as the tube is slowly raised out of the water, as shown in Fig. 5.1. air column loudspeaker surface of water water wall of tube Fig. 5.1 A loudspeaker producing sound of frequency 530 Hz is positioned at the open top end of the tube as it is raised. The water surface inside the tube is always level with the water surface outside the tube. The speed of the sound in the air column in the tube is 340 m s–1.

Read automatically from the paper; the printed page above is exact.