600-Nm Light Is Incident on a Defraction Grating with a Ruling

Multiple Choice

600-nm light is incident on a defraction grating with a ruling separation of 1.7 *10^-6 m. The second order line occurs at a diffraction angle of:

A) 0
B) 10 $\degree$
C) 21 $\degree$
D) 42 $\degree$
E) 45 $\degree$