MCQOPTIONS
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MCQOPTIONS
| 1. |
Intensity of radiation at a surface in perpendicular direction is equal to: |
| A. | Product of emissivity of surface and \[1/\pi .\] |
| B. | Product of emissivity of surface and \[\pi .\] |
| C. | A\[\to \]2, B\[\to \]1, C\[\to \]3, D\[\to \]4 |
| D. | Product of emissive power of surface and \[\pi .\] |
| Answer» D. Product of emissive power of surface and \[\pi .\] | |