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| Q. |
In the method of microscopic inspection what is the angle of beam light with the work? |
| A. | 200 |
| B. | 300 |
| C. | 600 |
| D. | 900 |
| Answer» C. 600 | |
| Explanation: in one method of microscopic inspection, a straight edge is placed on the surface to be inspected and a beam of light is projected at about 60 degree to the work. the shadows cast into the surface scratches are magnified and studied. | |
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