. A star is moving towards the earth with a speed of
4.5 x 106m/s. If the true wavelength of a certain line in the spectrum received from the star is 5890 Å, its apparent wavelength will be about
A. 5890 Å
B. 5978 Å
C. 5802 Å
D. 5896 Å
Best Answer
Ans: C
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