The displacement of a wave is expressed as

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

y(x,t)=0.1\sin(2\pi x+100\pi t)

, with

x

in metres and

t

in seconds. Which option correctly states the direction of propagation of the wave along the

x

-axis and its frequency? (a)

\text{Positive }x\text{-direction},\;50\,\text{Hz}

(b)

\text{Negative }x\text{-direction},\;100\,\text{Hz}

(c)

\text{Negative }x\text{-direction},\;50\,\text{Hz}

(d)

\text{Positive }x\text{-direction},\;100\,\text{Hz}