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Q1: A radar receiver has a noise figure of 10 dB at 300 K having a bandwidth of 2.5 MHz. The minimum power it can receive is

A 3.45 x 10-15 W

B 1.38 x 10-15 W

C 7.5 x 10-15 W

D 93.15 x 10-15 W

ANS:D - 93.15 x 10-15 W

Pm = kT0Δf(F - 1) = 93.15 x 10-15 W.



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