Electromagnetic WavesMedium
Question
Match List I with List II:
| List-I (Electromagnetic wave) | List-II (Production) | ||
|---|---|---|---|
| A. | Microwave | I. | Electrons in atoms emit light when they move from a higher energy level to a lower energy level |
| B. | Visible light | II. | Radioactive decay of nucleus |
| C. | Gamma rays | III. | Vibration of atoms and molecules |
| D. | Infra-red rays | IV. | Klystron valve or magnetron valve |
Choose the correct answer from the options given below:
Options
A.A-III, B-I, C-II, D-IV
B.A-III, B-IV, C-I, D-II
C.A-IV, B-I, C-II, D-III
D.A-IV, B-III, C-II, D-I
Solution
Sol. [Key Concept: Electromagnetic waves and their sources]
| List-I (Electromagnetic wave) | List-II (Production) | |
|---|---|---|
| (A-IV) | Microwave | Klystron valve or magnetron valve |
| (B-I) | Visible light | Electrons in atoms emit light when they move from a higher energy level to a lower energy level |
| (C-II) | Gamma rays | Radioactive decay of nucleus |
| (D-III) | Infra-red rays | Vibration of atoms and molecules |
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