Question: A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.068mm apart. How far apart

A parallel beam of light from a He-Ne laser, with a wavelength 633 nm, falls on two very narrow slits 0.068mm apart. How far apart are the fringes in the center of the pattern on a screen 3.3 m away?

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