The equation of a wave is given by (all quantity expressed in $m.k.s\ units$ ) $Y$ = $5\ sin10\pi $ $(t - 0.01x)$ along the $x-$ axis. The phase difference between the points separated by a distance of $10\ m$ along $x-$ axis is
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For the given wave, $k=0.1 \pi=\frac{2 \pi}{\lambda}$
$\Longrightarrow \lambda=20 m$
Thus phase difference between two points separated by $10 \mathrm{m}$ is $\frac{2 \pi}{\lambda}\left(x_{2}-x_{1}\right)$
$=\frac{2 \pi}{\lambda} \times 10 m=\pi$
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