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| Q. |
Reflectivity of the materials depends on which of the following factors? |
| A. | wave length |
| B. | properties of material |
| C. | surface finish |
| D. | all of the mentioned |
| Answer» D. all of the mentioned | |
| Explanation: reflectivity of the materials depends on wavelength, the properties of materials, surface finish and temperature. | |
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