Question

Which action will raise a pitch from a low sound to a higher one?

A ruler placed on a desk is moved so that only a small amount of the ruler is touching the desk before it is struck.
none of the above
A violin string is tightened, increasing the amount of vibration.
A violin string is loosened, decreasing the amount of vibration.

Answer 1

A violin string being tightened

Answer 2

the violin string being tightened would raise the pitch overall! this is because there’s a higher frequency in vibration! hope this helps :)