Question

(iv) Communication channel consists of:
(a) Transmission line
(c) Free space
(b) Optical fibre
(d) All of them​

Answer 1

Answer:

i think (d) is the correct answer.

please mark brainliest

Answer 2

Answer:

D All of them

Explanation:

Transmitter sends the signal through communication channel and Receiver receives the signal from it. In communication channel we use optical fibre, in which total internal reflection occur. This follows a transmission line and free space is also there in between. So, D option is the correct answer.