Monochromatic light passes through a single slit of width and forms a diffraction…

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

Problem

Monochromatic light passes through a single slit of width

0.12\,\text{mm}

and forms a diffraction pattern on a screen

1.8\,\text{m}

away. The distance from the center of the pattern to the first dark fringe is measured to be

4.5\,\text{mm}

. Assuming the screen is far enough away that the angle is small, what is the wavelength of the light? (a)

150\,\text{nm}

(b)

450\,\text{nm}

(c)

300\,\text{nm}

(d)

600\,\text{nm}