A. Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object.
B. Turning a star from white to blue
C. In future sun would become blue
D. Black hole was blue at its start
E. None of these
Correct Answer: Doppler effect in which an object appears bluer when it is moving towards the observer or observer is moving towards the object. ✔
Last Updated: July 21, 2024