Two lossy lines are to be joined end to end. The first line is 10 m long and has a loss rating of 0.20 dB/m. The second lines is 15 m long and has a loss rating of 0.10 dB/m. The reflection coefficient at the junction (line 1 to line 2) is Γ = 0.30. The input power (to line 1) is 100 mW. Determine the total loss of the combination in dB to the output end of line 2.

A. 3.91 dB

B. 2.91 dB

C. 4.91 dB

D. 1.91 dB

Answer: Option A