A spectral line A 5000 in the line coming from distant star

Last updated: 6/26/2023

A spectral line A 5000 in the line coming from distant star is observed as 5010 The receding velocity of the star is O 1 2 x 107 cm s O 6 x 105 m s O 1 2 x 107 km s O 6 km s