Textbook ExpertVerified Tutor
5 Dec 2021
Given information
It is given that the galaxy is moving away from earth.
(emitted wavelength)
(observed wavelength)
Step-by-step explanation
Step 1.
By using Doppler's effect formula we can find out the velocity
Hence, to find the speed of the galaxy, let us consider ;
where, is velocity, speed of light which has value and are observed and emitted wavelengths respectively whose values are given.
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