Question 139 of 165
Match the LIST-I with LIST-II
\(\begin{array}{|l|l|l|l|} \hline & \text{List-I} & & \text{List-II} \\ \hline \text{A.} & \text{Radio-wave} & \text{I.} & \text{is produced by Magnetron valve} \\ \hline \text{B.} & \text{Micro-wave} & \text{II.} & \text{due to change in the vibrational modes of atoms} \\ \hline \text{C.} & \text{Infrared-wave} & \text{III.} & \text{due to inner shell electrons moving from higher to lower energy level} \\ \hline \text{D.} & \text{X-ray} & \text{IV.} & \text{due to rapid acceleration of electrons} \\ \hline \end{array}\)
Choose the correct answer from the options given below:
Show answer and solution
Answer: (B) A-IV, B-I, C-II, D-III
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
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