MCQOPTIONS
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MCQOPTIONS
| 1. |
In thermal radiation for a black body (where, ε is emissivity and α is absorptivity)? |
| A. | α = 1; ε ≠1 |
| B. | α ≠1, ε = 1 |
| C. | α ≠1, ε ≠1 |
| D. | α = 1; ε = 1 |
| Answer» E. | |