2) You shine violet light through a diffraction grating (200 lines/cm) on a screen 2.0 m from the grating. The width of the light beam is 0.15 mm. The wavelength of the light is 400 nm.
a) How many slits will the light pass through?
b) What is the angular position of m = 1 maximum?
c) What is the angular position of the 2nd minimum?