Match List I with List II.
$$\begin{array}{|l|l|l|l|}\hline & \text{List I} & & \text{List II} \\ \hline \text{A.} & \text{Facsimile} & \text{I.} & \text{Static document image} \\ \hline \text{B.} & \text{Guided media channel} & \text{II.} & \text{Local broadcast radio} \\ \hline \text{C.} & \text{Frequency modulation} & \text{III.} & \text{Rectangular wave} \\ \hline \text{D.} & \text{Digital signal} & \text{IV.} & \text{Optical fibre} \\ \hline \end{array}$$
Choose the correct answer from the following options:
Answer: (B) A-I, B-IV, C-II, D-III
Facsimile (fax) transmits a static document image (A-I). An optical fibre is a guided medium (B-IV). FM is used for local broadcast radio (C-II). A digital signal is a rectangular wave (D-III).
Solution by Sreeraj P, M.Sc Physics