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An Observer Is Moving in Space Toward a Distant Star

Question 11

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An observer is moving in space toward a distant star at 200 km/s while the star is moving toward the observer at 400 km/s;the relative velocity being 600 km/s of approach.What relative change in frequency of the light from the star as seen by the observer? (The speed of light in space is 3.00 × 105 km/s) .


A) 0.067% increase
B) 0.20% decrease
C) 0.20% increase
D) 0.033% decrease

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