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An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer? (speed of light = 3 × 108 ms–1)
  • a)
    17.3 GHz
  • b)
    15.3 GHz
  • c)
    10.1 GHz
  • d)
    12.1 GHz
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
An observer is moving with half the speed of light towards a stationar...
For relativistic motion
; v = relative speed of approach

 
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An observer is moving with half the speed of light towards a stationary microwave source emitting waves at frequency 10 GHz. What is the frequency of the microwave measured by the observer? (speed of light = 3 × 108 ms–1)a)17.3 GHzb)15.3 GHzc)10.1 GHzd)12.1 GHzCorrect answer is option 'A'. Can you explain this answer?
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