Question

Constants Two radio antennas radiating in phase are located at points A and B

Problem 35.43 


Constants Two radio antennas radiating in phase are located at points A and B. 200 m apart (see the figure (Figure 1)). The radio waves have a frequency of 5.80 MHz. A radio receiver is moved out from point B along a line perpendicular to the line connecting A and B (line BC shown in the figure). 

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Part A 

At what distances from B will there be destructive interference? (Note: The distance of the receiver from the sources is not large in comparison to the separation of the sources, so equation d sin θ-(m + 1/2)λ does not apply) 

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