McqMate
| Q. |
This functions as a super conductor at a critical temperature of |
| A. | 30ok |
| B. | 60ok |
| C. | 90ok |
| D. | 120ok |
| Answer» C. 90ok | |
| Explanation: this functions as a super conductor at a critical temperature of 900k. charged particles in solids can travel only in fixed directions or levels. | |
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