Answer:
Options C
The speed of the travelling waves on the string.
Explanation:
When a string fixed at both ends is made to vibrate faster, this is the same as increasing the frequency of the wave traveling through the string.
from the wave equation,
[tex]v=f \times \lambda[/tex]
v = velocity of the wave
f = frequency of the wave
λ = wavelength
We can see that the speed (velocity) of the waves travelling in the string increase once the frequency increases. this is because there is a direct proportionality between the two wave parameters. This makes option C correct.
The others are wrong for the following reasons:
Option A: The period decreases with increasing frequency
Option B: The wavelength decreases with increasing frequency
Option D: The amplitude is not affected by the frequency
