MCQOPTIONS
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| 1. |
The radioactive heat transfer per unit area (W/m2) between two plane-parallel gray surfaces (emissivity = 0.9) maintained at 400 K and 300 K is |
| A. | 992 |
| B. | 812 |
| C. | 464 |
| D. | 567 |
| Answer» C. 464 | |