Question

Which of the folLowing wave functions does not represent a travelling wave?

• A. y = (x – vt)2
• B. y = log (x + vt)
• C. y = $\frac{1}{x + vt}$
• D. All of these

Answer 1

Answer: (D)

All of these

Answer 2

The basic requirement for a wave functions to represent a travelling wave is that for all values of x and t wave functions must have a finite value.

Out of the given functions for y no one satisfied this conditions. Therefore none can represent a travelling wave.