Physics · Wave Optics

With what speed should a galaxy move outward with respect to Earth so that the sodium-D line at wavelength 5890 Å is observed at 5896 Å?

Verified Solution4 OptionsUpdated: October 2026👁️1 View

1306 km s-1✓
2322 km s-1
3296 km s-1
4336 km s-1

Correct answer

306 km s-1

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With what speed should a galaxy move outward with respect to Earth so that the sodium-D line at wavelength 5890 Å is observed at 5896 Å?

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With what speed should a galaxy move outward with respect to Earth so that the sodium-D line at wavelength 5890 Å is observed at 5896 Å?

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