In the figure shown a sinusoidal wave is generated at the end `\'A\'`.
Channel: Doubtnut
Date: 2020-01-26

In the figure shown a sinusoidal wave is generated at the end `\'A\'`. The wave travels along positive `x-`axis and during its motions it encounter another string `BC` at the junction `\'B\'` at `x = 0`. The density of strings `AB` and `BC` and `rho` and `9rho` respectively and their radii of cross sections are `2r` and `r`. The wave funcation. amplitude and wavelength of incident wavs are respectively `y_(r), A_(r), lambda_(r)` and `y_(t), A_(t), lambda_(t)` repectively Which of the following statement regarding phase difference, `Deltaphi` between waves at `x = 0` is true ?