A red laser with \(\lambda = 633 \mathrm{~nm}\) shines through a single diffraction slit. The angular width of the bright spot in the middle of the screen is 10 degrees.
A green laser (wavelength \(550 \mathrm{~nm}\)) of intensity \(1.5 \mathrm{~\mu W/m^2}\) passes through a diffraction grating that is \(3 \mathrm{~cm}\) wide and has \(600 \mathrm{~lines/mm}\text{,}\) forming an image on a screen \(5 \mathrm{~cm}\) away.
