The path difference between two identical waves arriving at a point is 85.5 λ. Is the point bright or dark ? If the path difference is 42.5 micrometers, calculate the wavelength of light.

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The path difference between two
identical waves arriving at a point is 85.5 A. Is
the point bright or dark ? If the path
difference is 42.5 micrometers, calculate the
wavelength of light.
Transcribed Image Text:The path difference between two identical waves arriving at a point is 85.5 A. Is the point bright or dark ? If the path difference is 42.5 micrometers, calculate the wavelength of light.
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