1.54 mm
6. Two radio antennas separated by d = 300 m as shown in figure simultaneously
broadcast identical signals at the same wavelength. A car travels due north
along a straight line at position x = 1000 m from the center point between
the antennas, and its radio receives the signals. (a) If the car is at the position
of the second maximum after that at point when it has traveled a distance
y = 400 m northward, what is the wavelength of the signals? (b) How much
farther must the car travel from this position to encounter the next minimum
in reception? Note: Do not use the small-angle approximation in this
problem. Ans: 55.7 m and 124 m
400 m
300 m
1000 m
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