A Pair of Narrow Slits,separated by 1

question 31

Multiple Choice

A pair of narrow slits,separated by 1.8 mm,is illuminated by a monochromatic light source.Light waves arrive at the two slits in phase,and a fringe pattern is observed on a screen 4.8 m from the slits.If there are 5.0 complete bright fringes per centimeter on the screen near the center of the pattern,what is the wavelength of the monochromatic light?

• A) 550 nm
• B) 600 nm
• C) 650 nm
• D) 700 nm
• E) 750 nm

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