Solution: Coherent laser light passes through a narrow slit that has width 1.50 x 10 -4 m and falls on a screen that is 4.00 m from the slit. In the diffraction pattern on the screen the width of the central maximum is 3.00 x 10-2 m. What is the wavelength of the light?

Problem

Coherent laser light passes through a narrow slit that has width 1.50 x 10 -4 m and falls on a screen that is 4.00 m from the slit. In the diffraction pattern on the screen the width of the central maximum is 3.00 x 10-2 m. What is the wavelength of the light?