Light of a single wavelength is incident normally on a diffraction grating.
The resulting diffraction pattern is displayed on a screen.
Which change makes the first orders of intensity maxima further apart from each other on the screen?
1 )
placing the screen closer to the diffraction grating
using a diffraction grating with less separation between adjacent slits
3 )
using a diffraction grating with more slits but keeping the same separation between adjacent
4 )
slits using light with a shorter wavelength
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