Suppose you have two coherent point sources both having monochromatic light with wavelength of 514.50 nm. Which path difference between them would you need to achieve a phase shift of 45 degrees? I. 42.88nm II. 64.31nm III. 85.75nm IV. 128.6nm

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Suppose you have two coherent point sources both having monochromatic light with wavelength of 514.50 nm. Which path difference between them would you need to achieve a phase shift of 45 degrees?

I. 42.88nm

II. 64.31nm

III. 85.75nm

IV. 128.6nm

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