MCQOPTIONS
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| 1. |
_ A grey body is one whose absorptivity$? |
| A. | Varies with temperature |
| B. | Varies with wavelength of the incident ray |
| C. | Is equal to its emissivity |
| D. | Does not vary with temperature and. wavelength of the incident ray |
| Answer» D. Does not vary with temperature and. wavelength of the incident ray | |