The answer to the attachment is 6.04 cm. But the intensity should be zero when the difference in path length is half a wavelength.(adsbygoogle = window.adsbygoogle || []).push({});

2sqrt(2)x - 2x = 2.5cm

x = 3.02 cm. However, how come the answer is 6.04cm in stead? Can some one please explain this to me thoroughly? Thanks in advance.

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# Homework Help: Light problem

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