A diffraction grating has 600 lines per millimeter and is illuminated by white light

PHYSICS · Subjective · AP · Physics 2: Algebra-based · Waves Sound and Physical Optics · Waves Sound and Physical Optics

Problem

A diffraction grating has 600 lines per millimeter and is illuminated by white light. Calculate the angular width between the red line (λ = 700 nm) and the violet line (λ = 400 nm) in the first-order spectrum. Give your answer in degrees to two significant figures.

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