MCQOPTIONS
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				| 1. | 
                                    A 10 GHz signal propagates in a waveguide with a phase velocity of 4 x 108 m/s. If the signal produces standing wave in the guide, then the distance between successive minimal will be | 
                            
| A. | 10 mm | 
| B. | 20 mm | 
| C. | 30 mm | 
| D. | 40 mm | 
| Answer» C. 30 mm | |