A sinusoidal wave on a stretched string has its amplitude given by $y=(0\mathrm{.}010m)sin[(2m^{-1})x-(100s^{-1})t].$ What is the wavelength and frequency of this wave?

wavelength $=0\mathrm{.}020m$; frequency $=50Hz$

wavelength $=0\mathrm{.}010m$; frequency $=100Hz$

wavelength $=1\mathrm{.}0m$; frequency $=50Hz$

wavelength $=0\mathrm{.}010m$; frequency $=50Hz$

wavelength $=1\mathrm{.}0m$; frequency $=100Hz$