Question

gain vs frequency of an op
amp

Answer 1

Generally from flat to dropping off. The frequency response of a typical op amp chip will often start to fall at a very low frequency when operated in its open loop mode. The point at which the frequency starts to roll off is known as the break point [ typically the -3dB point is known as the break point.

If the output of the circuit remains within the supply rails of the amplifier, then the output voltage divided by thegain means that there is virtually no difference between the two inputs. As the input to the op-amp draws no current this means that the current flowing in the resistors R1 and R2 is the same.

hope it clarifies ur doubt dear friend..