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9. White light is spread out into spectral hues by a diffraction grating. If the grating has 2000 lines per centimeter, at what angle will red light (1= 640 nm) appear in the first order? (a) 0° (b) 3.57° (c) 7.35° (d) 11.2° (e) 13.4°

9. White light is spread out into spectral hues by a diffraction grating. If the grating has 2000 lines per centimeter, at what angle will red light (1= 640 nm) appear in the first order? (a) 0° (b) 3.57° (c) 7.35° (d) 11.2° (e) 13.4°

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9. White light is spread out into spectral hues by a diffraction grating. If the grating has 2000 lines per centimeter, at what angle will red light (1=640 nm) appear in the first order? (a) 0° (b) 3.57° (c) 7.35° (d) 11.2° (e) 13.4°
Transcribed Image Text:9. White light is spread out into spectral hues by a diffraction grating. If the grating has 2000 lines per centimeter, at what angle will red light (1=640 nm) appear in the first order? (a) 0° (b) 3.57° (c) 7.35° (d) 11.2° (e) 13.4°
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