The hydrogen spectrum has a red line at 656 nm and a blue line at 434 nm. The figure shows the interference pattern on a screen 0.8 m behind a diffraction grating. [Answer in 3 significant figures] Screen a) b) order blue line? y = 0 46.3 cm (1st order) ? (2nd order) How many lines/mm is this diffraction grating? What is the separation between the 1st order red line and the 2nd How many blue spots can you observed?

Monochromatic light of wavelength 650 nm is incident normally on a diffraction grating. If the second-order maximum of the diffraction pattern is observed at 22° from the centerline, what is the distance between the slits of the grating? O 3.5 um 0 1.4 km 2.8 μm O 8.5 km

The figure(Figure 1) shows the interference pattern on a screen 1.0 m behind an 970 line/mm diffraction grating. Figure Intensity H 89.7 cm / H 89.7 cm 43.6 cm 43.6 cm 1 of 1 Part A What is the wavelength of the light? Express your answer to two significant figures and include the appropriate units. λ = Submit O μA Value Provide Feedback Request Answer Units .... ?

A diffraction grating with a width of 2.2 cm contains 1050 lines/cm across that width. For an incident wavelength of 610 nm, what is the smallest wavelength difference this grating can resolve in the second order? Number Units