MCQOPTIONS
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| 1. |
One Mach number is equal to |
| A. | Velocity of light |
| B. | Velocity of sound \[(332\,\,m/\sec )\] |
| C. | \[1\,\,km/\sec \] |
| D. | \[1\,m/\sec \] |
| Answer» C. \[1\,\,km/\sec \] | |