MCQOPTIONS
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| 1. |
A surface of 2.1 mm is to be measured using a interferometer. Calculate nominal fraction for blue light which has wavelength of 0.785 m. |
| A. | 0.8280 |
| B. | 0.5350 |
| C. | 0.3185 |
| D. | 0.1910 |
| Answer» D. 0.1910 | |