In a laboratory, light from a particular spectrum line ofhelium passes through a diffraction grating and the second-order maximumis at 18.9 from the center of the central bright fringe. The samegrating is then used for light from a distant galaxy that is moving awayfrom the earth with a speed of 2.65 * 10^7 m>s. For the light from thegalaxy, what is the angular location of the second-order maximum forthe same spectral line as was observed in the lab?

In a laboratory, light from a particular spectrum line ofhelium passes through a diffraction grating and the second-order maximumis at 18.9 from the center of the central bright fringe. The samegrating is then used for light from a distant galaxy that is moving awayfrom the earth with a speed of 2.65 * 10^7 m>s. For the light from thegalaxy, what is the angular location of the second-order maximum forthe same spectral line as was observed in the lab?

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Question

In a laboratory, light from a particular spectrum line of
helium passes through a diffraction grating and the second-order maximum
is at 18.9 from the center of the central bright fringe. The same
grating is then used for light from a distant galaxy that is moving away
from the earth with a speed of 2.65 * 10^7 m>s. For the light from the
galaxy, what is the angular location of the second-order maximum for
the same spectral line as was observed in the lab?

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