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

Question

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 26.2, 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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Amity 4 years 2021-07-20T22:49:18+00:00 1 Answers 7 views 0

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  1. Edana
    0
    2021-07-20T22:50:31+00:00
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    Answer:

    Answer:

    750 nm

    Explanation:

    = separation of the slits = 1.8 mm = 0.0018 m

    λ = wavelength of monochromatic light

    = screen distance = 4.8 m

    = position of first bright fringe =

    = order = 1

    Position of first bright fringe is given as

    λ = 7.5 x 10⁻⁷ m

    λ = 750 nm

    Explanation:

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