Sodium’s emission lines at 589.0 nm and 589.6 nm pass through a diffraction grating and form two m 5 11 maxima on a viewing screen. Would the spacing between the two lines increase, decrease, or remain unchanged (indicate your answers with I, D, or U) if the grating is exchanged (a) for one having fewer lines per millimeter, or (b) for one with twice the total number of lines? What if (c) the intensity of the light is doubled, or (d) the maxima are viewed in second order?

Physics for Scientists and Engineers: Foundations and Connections
1st Edition
ISBN:9781133939146
Author:Katz, Debora M.
Publisher:Katz, Debora M.
Chapter35: Diffraction And Interference
Section: Chapter Questions
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Sodium’s emission lines at 589.0 nm and 589.6 nm pass through a diffraction grating and form two m 5 11 maxima on a viewing screen. Would the spacing between the two lines increase, decrease, or remain unchanged (indicate your answers with I, D, or U) if the grating is exchanged (a) for one having fewer lines per millimeter, or (b) for one with twice the total number of lines? What if (c) the intensity of the light is doubled, or (d) the maxima are viewed in second order?

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