A laser beam is incident on two slits with separation d = 0.012 mm. A screen is placed L = 2.2 m from the slits. The wavelength of the laser light is λ = 5750 Å. θ₁ and θ₂ are the angles to the first and second bright fringes above the center of the screen.
Express sin(θ₁) in terms of d and λ.
Express sin(θ₂) in terms of d and λ.
Express the distance between the two bright fringes on the screen, y, in terms of θ₁, θ₂ and L.
Solve for the numerical value of y in meters.