The Diffraction Grating

The Diffraction Grating problem 3

A diffraction grating is 4 mm high and has 2000 slits. It is illuminated with a laser light perpendicular to the diffraction grating. On a screen 0.5 m away, the first-order maximum with a height of 0.187 m is produced. What is the wavelength of the laser light?


material editor: Habeeb Adenle