Match List-I with List-II and select the correct answer:
| List-I | List-II |
| A. Sound waves | 1. Distance between successive crests |
| B. Wave length | 2. Measure of loudness |
| C. Timbre | 3. Sine waves |
| D. Decibels (dB) | 4. The nature of a sound |
A. A-1, B-2, C-3, D-4
B. A-2, B-3, C-1, D-4
C. A-3, B-1, C-4, D-2
D. A-4, B-1, C-2, D-3
Answer: Option C

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