When Light Illuminates a Diffraction Grating with 7000 Lines Per $62.4 ^ { \circ }$

Multiple Choice

When light illuminates a diffraction grating with 7000 lines per centimeter, its second order maximum is at $62.4 ^ { \circ }$ . What is the wavelength of the light?

A) $363 \mathrm {~nm}$
B) $336 \mathrm {~nm}$
C) $633 \mathrm {~nm}$
D) $752 \mathrm {~nm}$