Exercise 35.4 Resources previous | 9 of 31 | next Exercise 35.4 Part A Two radio

Question

Exercise 35.4 Resources previous | 9 of 31 | next Exercise 35.4 Part A Two radio antennas A and B radiate in phase. Antenna B is a distance of 120 m to the right of antenna A Consider point Q along the extension of the line connecting the antennas, a horizontal distance of 50.0 m to the right of antenna B. The frequency, and hence the wavelength, of the emitted waves can be varied. What is the longest wavelength for which there will be destructive interference at point Q? Express your answer using two significant figures. Submit My Answers Give Up Part B What is the longest wavelength for which there will be constructive interference at point Q? Express your answer using two significant figures. Submit My Answers Give Up Fe Continue

Explanation / Answer

path difference betwwent he waves arriving at point Q = AQ - BQ

AQ = 120 + 50 = 170 m

BQ = 50 m

path difference = 120 m

part(a)

for destructive interference path difference = lambda/2

lambda = 2*path difference = 2*120 = 240 m

part(a)

for constructive interference path difference = lambda

wavelength , lambda = path difference = 120 m

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