Properties of Wave Pulses and Waves Practice Test

A transverse wave travels along a taut rope with amplitude $A$ and speed $v$. The driver’s frequency is doubled while the rope tension and linear density stay constant. Which statement best describes the new wavelength?

A sinusoidal wave on a string has speed $12\ \text{m/s}$ and wavelength $3.0\ \text{m}$. The amplitude is doubled while the string and tension remain unchanged. Which quantity changes for the wave?