CAPE Physics Unit 1 · 2017 · Paper 1 · Question Q27
At what angle does the second order constructive interference occur for red light of wavelength 700\text{ nm} through a diffraction grating that has 600\text{ lines per mm}?
- (A)
12^\circ - (B)
39^\circ - (C)
57^\circ - (D)
90^\circ
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