Gain and NF of a single-stage amplifier are 10 dB and 3 dB respectively. When two such amplifiers cascaded then gain and NF of the cascaded amplifier will be?

Gain and NF of a single-stage amplifier are 10 dB and 3 dB respectivel

1.	Gain and NF of a single-stage amplifier are 10 dB and 3 dB respectively. When two such amplifiers cascaded then gain and NF of the cascaded amplifier will be?
A.	Gain : 20 dB, NF : 3.2 dB
B.	Gain : 20 dB, NF : 6.0 dB
C.	Gain : 13 dB, NF : 3.6 dB
D.	Gain : 13 dB, NF : 6.7 dB
Answer» B. Gain : 20 dB, NF : 6.0 dB

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Gain and NF of a single-stage amplifier are 10 dB and 3 dB respectively. When two such amplifiers cascaded then gain and NF of the cascaded amplifier will be?

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