MCQOPTIONS
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MCQOPTIONS
| 1. |
What is the SI unit of fracture toughness? |
| A. | N m<sup>-2</sup> |
| B. | J m<sup>-2</sup> |
| C. | J m<sup>-1</sup> |
| D. | N m<sup>-1</sup> |
| Answer» C. J m<sup>-1</sup> | |