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Progressive Waves :: Discussion
| 1. | The disc of a siren containing 60holes rotates at a constant speed of 360rpm. The emitted sound is in unison with a tuning fork of frequency. | |
| A. | 10Hz | |
| B. | 360Hz | |
| C. | 216Hz | |
| D. | 60Hz | |
| Answer: Option B | |
| Explanation: | |
|
Frequency of revolution of disc=360rpm=360/60rps=60rps |
|
| Tutorial Link: |
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