A pair of narrow slits that are 1.8 mm apart is illuminated by a monochromatic coherent...

A pair of narrow slits that are 1.8 mm apart is illuminated by a monochromatic coherent light source. A fringe pattern is observed on a screen 4.8 m from the slits. If there are 5.0 bright fringes/cm on the screen, what is the wavelength of the monochromatic light?

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

Expert Solution

apply Y = mLR/d

d = 1.8 mm

so wavelgnth L = Yd/mR

L = (1*10^-2 * 1.8 mm/(5 * 4.8)

L = 750 nm

genius_generous answered 2 years ago

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