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| Q. |
What is the wavelength value of neutral gas laser used in LBM? |
| A. | 633 nm |
| B. | 694 nm |
| C. | 856 nm |
| D. | 1064 nm |
| Answer» A. 633 nm | |
| Explanation: the value of wave length of neutral gas laser used in laser beam machining is 633 nm. | |
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