Question

Two particles on a wave having wavelength $2$m are at the distances of $5$m and $9$m respectively from origin. The phase difference between the particles is ________.

• A. $\frac{\pi }{2}$ rad
• B. $\pi$ rad
• C. $2\pi$ rad
• D. $4\pi$ rad

Answer 1

Answer: (D)

$4\pi$ rad

Distance between the particles is $4m$.

$\Delta \phi =\frac{d}{\lambda }\times 2\pi =\frac{4}{2}\times 2\pi =4\pi$