MCQOPTIONS
Saved Bookmarks
| 1. |
Which type of gamma ray source would be used to radiograph a weld in 150 mm thick steel plate? |
| A. | Ir-192 |
| B. | Co-60 |
| C. | Tm-170 |
| D. | Cs-137 |
| Answer» C. Tm-170 | |