MCQOPTIONS
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| 1. |
The tensile stress of about which limit are invisible to naked eye? |
| A. | 5n/mm<sup>2</sup> |
| B. | 6n/mm<sup>2</sup> |
| C. | 3n/mm<sup>2</sup> |
| D. | 10n/mm<sup>2</sup> |
| Answer» D. 10n/mm<sup>2</sup> | |