Multiple choice

The circuit shown in the figure has an ideal op amp. The oscillation frequency and the condition to sustain the oscillations, respectively, are

  1. $\frac{1}{CR}$ and R1 = R2
  2. $\frac{1}{CR}$ and R1 = 4 R2
  3. $\frac{1}{2CR}$ and R1 = R2
  4. $\frac{1}{2CR}$ and R1 = 4 R2
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

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