List of top Physics Questions on Waves asked in Assam CEE

A wave represented by the equation \[ y=a\cos(kx-\omega t) \] is superposed with another to form a stationary wave such that point \(x=0\) is a node. What is the equation for the other wave?

The fundamental frequency of a sonometer wire increases by \(4\) Hz if the tension in the string is increased by \(21\%\) keeping the length of the wire constant. What will be the new fundamental frequency of the wire if its length is increased by \(25\%\) while keeping the original tension in the wire?