MCQOPTIONS
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| 1. |
The velocity of sound increases in air by ......... for every degree Celsius increase of temperature. |
| A. | 60 m/sec. |
| B. | 0.61 m/sec. |
| C. | 60 ft/sec. |
| D. | 0.61 km/sec. |
| Answer» C. 60 ft/sec. | |