In a Two-Slit Experiment, the Slit Separation Is 3

Multiple Choice

In a two-slit experiment, the slit separation is 3.00 × m. The interference pattern is recorded on a flat screen-like detector that is 2.00 m away from the slits. If the seventh bright fringe on the detector is 10.0 cm away from the central fringe, what is the wavelength of the light passing through the slits?

A) 100 nm
B) 204 nm
C) 214 nm
D) 224 nm
E) 234 nm