MCQOPTIONS
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| 1. |
The Laser is a beam of radiations which are |
| A. | on-coherent and monochromatic |
| B. | oherent and monochromatic |
| C. | on-coherent and non-monochromatic |
| D. | oherent and non-monochromatic |
| Answer» C. on-coherent and non-monochromatic | |