For the oscillator circuit shown in Fig., \(\dfrac{V_{out}}{V_f}=3+sCR+ \dfrac{1}{sCR}\).Its oscillating frequency and ratio \(\dfrac{R2}{R1}\) are respectively.

\(\omega_0 = \dfrac{1}{\sqrt{3} \ RC} \ \rm rad/s, 2\)

\(\omega_0 = \dfrac{1}{\sqrt{3} \ RC} \ \rm rad/s, 3\)

\(\omega_0 = \dfrac{1}{RC} \ \rm rad/s, 3\)

\(\omega_0 = \dfrac{1}{RC} \ \rm rad/s, 2\)

For the oscillator circuit shown in Fig., \(\dfrac{V_{out}}{V_f}=3+sC

1.	For the oscillator circuit shown in Fig., \(\dfrac{V_{out}}{V_f}=3+sCR+ \dfrac{1}{sCR}\).Its oscillating frequency and ratio \(\dfrac{R2}{R1}\) are respectively.
A.	\(\omega_0 = \dfrac{1}{\sqrt{3} \ RC} \ \rm rad/s, 2\)
B.	\(\omega_0 = \dfrac{1}{\sqrt{3} \ RC} \ \rm rad/s, 3\)
C.	\(\omega_0 = \dfrac{1}{RC} \ \rm rad/s, 3\)
D.	\(\omega_0 = \dfrac{1}{RC} \ \rm rad/s, 2\)
Answer» E.