All Problems Diffraction of Light
Problem 5.128
Light with wavelength \(530 \mathrm{nm}\) falls on a transparent diffraction grating with period \(1.50 \mu \mathrm{m} .\) Find the angle, relative to the grating normal, at which the Fraunhofer maximum of highest order is observed provided the light falls on the grating (a) at right angles; (b) at the angle \(60^{\circ}\) to the normal.
\text { (a) } 45^{\circ} ; \text { (b)-64^{\circ} } \text { . }