If the output voltage is not a linear function of input voltage then ____________

(a) Op-amp acts a linear device

(b) Op-amp acts as a non-linear device

(c) Op-amp acts a polar device

(d) Op-amp acts as an inverter

The question was asked during a job interview.

This is a very interesting question from Operational Amplifier Terminals,Terminal Voltages and Currents topic in chapter The Operational Amplifier of Electric Circuits

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