The wave described by $y = 0.25 \sin(10\pi x - 2\pi t)$,where $x$ and $y$ are in meters and $t$ is in seconds,is a wave travelling along the

• A
  $+ve$ $x$ direction with frequency $1 \text{ Hz}$ and wavelength $\lambda = 0.2 \text{ m}$.
• B
  $-ve$ $x$ direction with amplitude $0.25 \text{ m}$ and wavelength $\lambda = 0.2 \text{ m}$.
• C
  $-ve$ $x$ direction with frequency $1 \text{ Hz}$.
• D
  $+ve$ $x$ direction with frequency $\pi \text{ Hz}$ and wavelength $\lambda = 0.2 \text{ m}$.