A string supports a disturbance described by

PHYSICS · Single correct · CBSE · Physics · Waves · Waves

Problem

y = 0.05\sin(3x + 15t)

, where

x

is in metres and

t

in seconds. Identify the direction of propagation and the speed of the wave. (a) Positive

x

\!-direction,

5\,\text{m\,s}^{-1}

(b) Positive

x

\!-direction,

7.2\,\text{m\,s}^{-1}

x

\!-direction,

5\,\text{m\,s}^{-1}

(d) Negative

x

\!-direction,

0.2\,\text{m\,s}^{-1}