Monochromatic light from a He-Ne laser (l = 632.8 nm) is incident on a diffraction grating containing 5 000 lines/cm. Determine the angle of the first-order maximum

a. 18.4°
b. 39.2°
c. 14.6°
d. 27.7°
e. 13.9°


A

Physics & Space Science

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