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What is the break frequency of the op-amp?

(a) fo = Unity Gain Bandwidth /closed loop voltage gain

(b) fo = Unity Gain Bandwidth / open loop voltage gain

(c) fo = Unity Gain Bandwidth /Gain of feedback circuit

(d) All of the mentioned

This question was posed to me in an interview for job.

My question is based upon Voltage Shunt Feedback Amplifier in portion Operational Amplifier Characteristics of Linear Integrated Circuits

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