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| Q. |
The main disadvantage of having a small focal spot on an X ray tube is: |
| A. | Heat is conducted away too fast |
| B. | Sharper radiographic images may be achieved with a larger focal spot |
| C. | A smaller focal spot is limited to lower tube currents because of the potential damage from overheating |
| D. | None of the above |
| Answer» C. A smaller focal spot is limited to lower tube currents because of the potential damage from overheating | |
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