Question

Conceptual Question 17.8 4 of 20 (Figure 1) shows the viewing screen in a double- experiment with monochromatic Sght. Fringe is the central mamum The fringe separation is Ay Ay will not change Review Constants Periodic T Previous ✓ Corect Part D Figure 1 of 1 Suppose the wavelength of the light is 400 mm How much farther is from the dot on the screen in the center of fringe to the left si han it is from the dot to the right sit? Express your answer with the appropriate units. A B C D E th 2 Ar. Value Units

Answer 1

Because you are looking at a bright fringe, the answer is always a multiple of the wavelength because the light creates constructive interference. If you are looking at the center (zeroth) fringe, the difference is (550)(0) = 0. For the first maximum, the difference is 550 nm. For the second, it is 550 x 2 = 1100 nm. Basically, for the nth maxima, the difference is 550n.