# Light from a red monochromatic source is shone through a pair of slits, creating an interference pattern. At the 2nd-order maximum, light ?

travels 0.800 000 1 m from slit 1 and 0.800 001 4 m from slit 2. Find the wavelength of light used.

hint: the path-difference equation

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- NCSLv 74 weeks agoFavorite Answer
path difference = n * λ

(0.800 001 4 - 0.800 000 1)m = 2 * λ

λ = 6.5e-7 m = 650 nm

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