Change the chapter
Question
An opal such as that shown in Figure 27.17 acts like a reflection grating with rows separated by about $8\textrm{ }\mu\textrm{m}$ . If the opal is illuminated normally, (a) at what angle will red light be seen and (b) at what angle will blue light be seen?
Question Image
1. $5^\circ$
2. $3^\circ$
Solution Video