Monochromatic light (2 = 632.8 nm) from a helium-neon laser shines at a right angle onto the surface of a diffraction grating tha
contains 531 001 lines/m. Find the angles at which one would observe the first-order and second-order maxima.
a. 6. = 19.639; 62 = 39.26°
c. 6) = 21.10°; 6: = 42.20°
b. 61 = 19.63°; 62 = 42.20°
d. 61 = 33.60°; 62 = 67.200