In a Two-Slit Experiment, the Slit Separation Is $3.00 \times 10 ^ { - 5 } \mathrm {~m}$

Multiple Choice

In a two-slit experiment, the slit separation is $3.00 \times 10 ^ { - 5 } \mathrm {~m}$ . The interference pattern is created on a screen that is $2.00 \mathrm {~m}$ away from the slits. If the 7 th bright fringe on the screen is $10.0 \mathrm {~cm}$ away from the central fringe, what is the wavelength of the light?

A) $224 \mathrm {~nm}$
B) $214 \mathrm {~nm}$
C) $204 \mathrm {~nm}$
D) $234 \mathrm {~nm}$
E) $100 \mathrm {~nm}$