Question

6. Two monochromatic, coherent point light sources of the same wavelength \lambda, are located on a line perpendicular to a distant screen. The closest source, $S_1$, is at a distance D from the screen, while the more distant one, $S_2$, is a distance d farther away as shown in the diagram: the screen is far away in the sense that both D and d are much larger than the wavelength of the light sources. Assuming that there is an interference maximum at the point A where the line drawn through the sources intersects the screen, find a formula for the radius r of the first bright ring around A on the screen, and get a numerical value assuming \lambda = 600 nm, D = 3.0 m and d = 1.0 m. Recall that the expansion $(1+x)^{1/2} = 1 + x/2 + O(x^2)$ can be used when $x<<1.$

          6. Two monochromatic, coherent point light sources of the same wavelength \lambda, are located
on a line perpendicular to a distant screen. The closest source, $S_1$, is at a distance D
from the screen, while the more distant one, $S_2$, is a distance d farther away as shown
in the diagram: the screen is far away in the sense that both D and d are much larger than
the wavelength of the light sources. Assuming that there is an interference maximum at
the point A where the line drawn through the sources intersects the screen, find a
formula for the radius r of the first bright ring around A on the screen, and get a
numerical value assuming \lambda = 600 nm, D = 3.0 m and d = 1.0 m. Recall that the
expansion $(1+x)^{1/2} = 1 + x/2 + O(x^2)$ can be used when $x<<1.$

6. Two monochromatic, coherent point light sources of the same wavelength λ, are located
on a line perpendicular to a distant screen. The closest source, S1, is at a distance D
from the screen, while the more distant one, S2, is a distance d farther away as shown
in the diagram: the screen is far away in the sense that both D and d are much larger than
the wavelength of the light sources. Assuming that there is an interference maximum at
the point A where the line drawn through the sources intersects the screen, find a
formula for the radius r of the first bright ring around A on the screen, and get a
numerical value assuming λ= 600 nm, D = 3.0 m and d = 1.0 m. Recall that the
expansion (1+x)^1/2 = 1 + x/2 + O(x^2) can be used when x<<1.

Added by Amanda H.

Question

Please give Ace some feedback