Sodium's emission lines at 589.0 nm and 589.6 nm pass through a diffraction grating and form two m = +1 maxima on a viewing screen.For which situation would the spacing between the two lines increase?

Question

Sodium's emission lines at 589.0 nm and 589.6 nm pass through a diffraction grating and form two m = +1 maxima on a viewing screen.For which situation would the spacing between the two lines increase?​

Quizplus · Accepted Answer

The spacing between diffraction maxima is directly proportional to the order of the maxima (m). Viewing the maxima in second order (m=2) would increase the spacing between the two lines compared to first order (m=1).

Sodium's Emission Lines at 589