A student performs a double-slit experiment with a laser that produces red light of wavelength $680\,\text{nm}$. The light falls normally on a double slit. The diagram shows part of the bright-fringe pattern seen on a screen $2.4\,\text{m}$ from the slits. The distance spanning five bright fringes is $34\,\text{mm}$. Determine the slit separation.
- A$8.5\times10^{-3}\,\text{m}$
- B$2.4\times10^{-4}\,\text{m}$
- C$1.9\times10^{-4}\,\text{m}$
- D$4.8\times10^{-5}\,\text{m}$