A grating is made of exactly 8000 slits; the slit spacing is 1.50 m. Light of

Question:

A grating is made of exactly 8000 slits; the slit spacing is 1.50 μ m. Light of wavelength 0.600 μ m is incident normally on the grating.
(a) How many maxima are seen in the pattern on the screen?
(b) Sketch the pattern that would appear on a screen 3.0 m from the grating. Label distances from the central maximum to the other maxima.