A steel piano string is attached,under tension,at each end to secure posts.When gently struck,a faint note can be detected coming from the string.The string is then cooled by blowing cold air over it and then is struck again.How does the note now detected compare to the previous one.
A)It is the same since the posts don't move.
B)It is at a higher frequency than the original one.
C)It is at a lower frequency than the original one.
D)More than one answer is correct.

Question

Quizplus · Accepted Answer

Cooling the steel piano string causes it to contract, increasing the tension in the string. This increased tension results in a higher frequency of vibration when the string is struck, producing a note of higher pitch.

A Steel Piano String Is Attached,under Tension,at Each End to Secure