MCQOPTIONS
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| 1. |
Electromagnetic radiations propagate in vacuum with a velocity of __________ metre/second. |
| A. | 3 x l05 |
| B. | 3 x l08 |
| C. | 3 x l010 |
| D. | 3 x l012 |
| Answer» C. 3 x l010 | |