The most distant galaxies observed to date have a redshift of approximately z =10. part a how does the wavelength of light we observe from those galaxies compare with its original wavelength when it was emitted? express your answer as an integer.

To solve the problem it is necessary to apply the concepts related to wavelength and error calculation.

The calculation of the error is usually defined by

Where

Wavelength from the observer

Wavelength from the rest

The previous formula is exactly equal to,

Therefore the observed wavelength will be 11 times longer that the emitted wavelength.

If we make the comparison for the ultraviolet region (from 10nm to 400nm) we get that,

That is the infrared region of electromagnetic spectra.

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