Suppose the Apparent Wavelength of the Known Lines in the Spectrum

question 55

Multiple Choice

Suppose the apparent wavelength of the known lines in the spectrum of hydrogen are measured to increase by 50% when light from a distant galaxy is observed on Earth (this is known as the Red Shift) .Calculate the speed of recession of the galaxy relative to Earth as a percentage of the speed of light.

• A)50%
• B)20%
• C)38%
• D)63%
• E)60%

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