You observe a distant quasar in which the Lyman alpha line of hydrogen (rest wavelength = 121.6 nm)is found at a wavelength of 547.2 nm.When the light from this quasar was emitted,how large was the universe compared to its current size?

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The Answer of You observe a distant quasar in which the Lyman alpha line of hydrogen (rest wavelength = 121.6 nm)is found at a wavelength of 547.2 nm.When the light from this quasar was emitted,how large was the universe compared to its current size?

You Observe a Distant Quasar in Which the Lyman Alpha