NEET 2020 Model Question Paper 3

Voltage gain of the first amplifier,
V1=10, Voltage gain of the second amplifier,
V2=20, Input signal voltage, V1 = 0.01 V,
Output AC signal voltage = V0
The total voltage gain of a two-stage cascaded amplifier is given by the product of voltage gains of both the stages, i.e.,
V=V1×V2 =10×20=200
V=

V0

V1

We have the relation:
V0=V×V1 =200×0.01=2V,
Therefore,the output AC signal of the given amplifier is 2 V.