Answering Exams

The term ‘Blue Shift’ is used to indicate?

The term ‘Blue Shift’ is used to indicate?

A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object. (correct)
B. Turning a star from white to blue
C. In would become blue
D. hole was blue at its start
E. None of these

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