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White Light Is Spread Out into Spectral Hues by a Grating

Question 49

Multiple Choice

White light is spread out into spectral hues by a grating. If the grating has 2000 lines per centimeter, at what angle will red light (640 nm) appear in the first order?


A) 3.57°
B) 7.35°
C) 11.2°
D) 13.4°
E) 14.7°

Correct Answer:

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