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26-04-2024
Physics

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Monochromatic light from a He-Ne laser (a-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°

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