Red Light $\lambda$ = 700 Nm)is Incident Normally on a Diffraction Grating Having

Multiple Choice

Red light ( $\lambda$ = 700 nm) is incident normally on a diffraction grating having 1000 lines/cm.A maximum is observed at a deflection angle of 12º.The order in which this occurs is

A) 1
B) 2
C) 3
D) 4
E) 5