A diffraction grating has 600 lines per millimeter and is placed 1.5 m from a screen

PHYSICS · Single correct · 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 placed 1.5 m from a screen. What is the approximate linear width on the screen of the first-order visible spectrum between wavelengths 400 nm and 700 nm? (a) 0.54 m0.54\,\text{m} (b) 0.27 m0.27\,\text{m} (c) 0.18 m0.18\,\text{m} (d) 0.33 m0.33\,\text{m}

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