For the wave with in metres and in seconds

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

Problem

For the wave

y=0.01\sin(kx-\omega t)

with

x

in metres and

t

in seconds, which one of the following pairs gives permissible SI units for

k

and

\omega

respectively so that the argument of the sine function is dimensionless? (a)

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

(b)

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

(c)

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

(d)

\text{m},\; \text{s}