• question_answer Two travelling waves${{y}_{1}}=A\sin [k(x+ct)]$ ${{y}_{2}}=A\sin [k(x+ct)]$are superposed on a string. The distance between adjacent nodes is A) $\frac{ct}{\pi }$                                              B) $\frac{ct}{2\pi }$ C) $\frac{\pi }{2K}$                                             D) $\frac{\pi }{K}$

Distance between two adjacent nodes is $\frac{\lambda }{2}=\frac{2\pi /k}{2}=\pi /k$