A Grating with 8000 Slits Space Over 2 $^{\circ}$ B) 151 $^{\circ}$

Multiple Choice

A grating with 8000 slits space over 2.54 cm is illuminated by light of a wavelength of 546 nm.What is the angle for the third order maximum?

A) 31.1 $^{\circ}$
B) 15.1 $^{\circ}$
C) 26.3 $^{\circ}$
D) 10.5 $^{\circ}$