Situation 17.2 a Pair of Narrow Slits,separated by 1.8 Mm,is Illuminated by Illuminated

question 14

Multiple Choice

Situation 17.2
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.A fringe pattern is observed on a screen 4.8 m from the slits.
-In Situation 17.2,there are 5.0 bright fringes/cm on the screen.The wavelength of the monochromatic light is closest to:

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

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Definitions:

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