Question
(a) What is the distance between the slits of a diffraction grating that produces a first-order maximum for the first Balmer line at an angle of $20.0^\circ$? (b) At what angle will the fourth line of the Balmer series appear in first order? (c) At what angle will the second-order maximum be for the first line?
1. $1.92 \textrm{ }\mu\textrm{m}$
2. $12.3^\circ$
3. $43.2^\circ$
Solution Video