MCQOPTIONS
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| 1. |
A laser beam of pulse power 1012 watt is focussed on an object are 10?4 cm2. The energy flux in watt/ cm2 at the point of focus is [AFMC 2003] |
| A. | 1020 |
| B. | 1016 |
| C. | 108 |
| D. | 104 |
| Answer» C. 108 | |