MHT CET Physics question

If a star appearing yellow starts accelerating towards the earth, its color appears to be turned [MHT-CET 2023]

(A)Suddenly red
(B)Gradually red
(C)Suddenly blue
(D)Gradually blueCorrect

Answer: (D)

Solution

A star approaching the earth shows a Doppler shift to higher frequency (blue shift), and because its speed increases gradually under acceleration, the

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Question ID VK-068698