MCQOPTIONS
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				| 1. | 
                                    In microwave communication, some times, microwave signals reach large distances by following the earth curvature. This phenomenon is called | 
                            
| A. | tropospheric scatter | 
| B. | faraday effect | 
| C. | ionospheric reflection | 
| D. | ducting | 
| Answer» E. | |