A system has three stage cascaded amplifier each stage having a power gain of 10 dB and noise figure of 6 dB. the overall noise figure is
(a) 1.38
(b) 6.8
(c) 4.33
(d) 10.43
I got this question in an international level competition.
I'd like to ask this question from Noise topic in portion EDC Overview of Electronic Devices & Circuits