What minimum path length is needed to introduce a phase shift of 205° in light of wavelength 566 nm? (Give your answer in nm.) What phase shift will that path difference you calculated in part (a) introduce in light of wavelength 799 nm? (Give you answer in degree.)

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Q: 02

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A: Given,The wavelength of the source, λ=1.5405 Angstroma= 5.196 Angstromb=9.2365 Angstromc=14.6208…

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Interference of Light

The word "constructive" signifies addition in interference. Constructive interference occurs when the path of the waves that start from the slit differs by 1 entire wavelength or in the intervals of the same. Hence, the waves that are presented on the screen are in phase (crest to crest/trough to trough). The waves interfering constructively forms bright fringes on the screen.