The figure shows three progressive waves A, B and c. wahat canbe concluded from the figure that with respect to wave A?

Options

A. The wave C is ahead buy a phase angle of `pi//2` and the wave B lags behind by a phase `pi//2`
B. The wave C is lg behind by a phase angle of `pi//2` and the wave B is ahead by a phase angle `pi//2`
C. The wave C is ahead by a phase angle of pi and the wave B lags behind by a phase angle pi.
D. The wave C lags behind by a phase angle of pi and the wave B is ahead by a phase angle pi.

Answer

b

Explanation

In the figure, 'C' reaches the position where 'A' already reaches after `omegat =pi//2` and 'A' reaches the position where 'B' already reaches after `omega t=pi//2`.