The phase angle between two points in a medium is 4 pi/5. What is the separation between these two points if the wavelength of the wave is 5 m?
Correct answer: C. 2m
- A. 5/4 m
- B. 4pi m
- C. 2m
- D. 10m
Explanation
SOLVE AS follows: Given that the phase difference is 5, For the minimum difference in length between the points, assume they lie within the same wavelength.For a length difference of 2, the phase difference was 2πFor a length difference of x, the phase difference was 5. We find 'x' to be 10 .Given that the wavelength is 0.5m.In other words, x is 5cm.
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