A diffraction grating ruled with lines per millimeter is illuminated with two…

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

Problem

A diffraction grating ruled with

300

lines per millimeter is illuminated with two spectral lines of wavelengths

560\,\text{nm}

and

589\,\text{nm}

. What is the angular separation between their second-order maxima? (a)

0.5^{\circ}

(b)

1.7^{\circ}

(c)

1.0^{\circ}

(d)

0.7^{\circ}