Question

depends
36. Which of these test tubes, containing water
up to some level, will produce sound of
higher pitch when air is blown on their brim
to produce whistling sound.
А
B
С
D​

Answer 1

Answer:

When the bottle has a small amount of water in it, the air molecules have lots of room and vibrate slower. Adding more water gives them less space to vibrate in, making them vibrate faster and producing a higher pitch.