MCQOPTIONS
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| 1. |
Sound waves have the following frequencies that are audible to human beings [CPMT 1975] |
| A. | 5 c/s |
| B. | 27000 c/s |
| C. | 5000 c/s |
| D. | 50,000 c/s |
| Answer» D. 50,000 c/s | |