A diffraction grating has 300 lines per mm

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

Problem

A diffraction grating has 300 lines per mm. Visible light (400 nm to 700 nm) is incident normally on the grating. (a) What is the highest order for which all wavelengths are present? (b) What is the angular width of the order in part a?

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