An Observer Is Moving in Space Toward a Distant Star

question 49

Multiple Choice

An observer is moving in space toward a distant star at 100 km/s while the star is moving toward the observer at 200 km/s;the relative velocity being 300 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)0.10% increase
• B)0.10% decrease
• C)0.067% increase
• D)0.033% decrease

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