The phase difference between displacement and driven force of forced oscillator in critical driving frequency condition will be

The phase difference between displacement and driven force of forced o

1.	The phase difference between displacement and driven force of forced oscillator in critical driving frequency condition will be
A.	0
B.	\(\dfrac{\pi}{2}\)
C.	π
D.	\(\dfrac{3\pi}{2}\)
Answer» B. \(\dfrac{\pi}{2}\)