Answer:
2.20°
Explanation:
λ = wavelength of the coherent light = 500 x 10⁻⁹ m
d = slits separation = 1.30 x 10⁻⁵ m
n = order of the fringe = 1
θ = angle made by the first bright fringe with the center line = ?
For first bright fringe, Using the equation
d Sinθ = n λ
(1.30 x 10⁻⁵) Sinθ = (1) (500 x 10⁻⁹)
[tex]Sin\theta =\frac{500\times 10^{-9}}{1.30\times 10^{-5}}[/tex]
Sinθ = 0.0385
θ = 2.20°
