Match the LIST-I with LIST-II \\ $\begin{array}{|l|l|l|l|} \hline & \text{List-I} & & \text{List-II} \\…
Match the LIST-I with LIST-II \\
$\begin{array}{|l|l|l|l|}
\hline
& \text{List-I} & & \text{List-II} \\
\hline
\text{A.} & \text{Radio-wave} & \text{I.} & \text{is produced by Magnetron valve} \\
\hline
\text{B.} & \text{Micro-wave} & \text{II.} & \text{due to change in the vibrational modes of atoms} \\
\hline
\text{C.} & \text{Infrared-wave} & \text{III.} & \text{due to inner shell e- moving from higher to lower energy} \\
\hline
\text{D.} & \text{X-ray} & \text{IV.} & \text{due to rapid acceleration of electrons} \\
\hline
\end{array}$
Choose the correct answer from the options given below:
A-IV, B-II, C-I, D-III
A-IV, B-I, C-II, D-III
A-IV, B-III, C-I, D-II
A-II, B-IV, C-III, D-I
Solution
Matching electromagnetic wave sources: Radio-wave (A) - produced by rapid acceleration of electrons in antennas and transmitters, matches IV. Micro-wave (B) - produced by Magnetron valve, matches I. Infrared-wave (C) - due to change in vibrational modes of atoms and molecules, matches II. X-ray (D) - due to inner shell electrons moving from higher to lower energy levels, matches III. Correct pairing: A-IV, B-I, C-II, D-III