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Which of the following refers to the change in wavelength that occurs when an object moves toward or away from the source
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Which of the following refers to the change in wavelength that occurs when an object moves toward or away from the source

User Andrew Koper
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The answer is doppler effect. its an increase or decrease in the frequency of sound, light, or other waves as the source and observer moves towards or away from each other. Example is when sudden change in pitch is noticeable in a passing siren.
User Moore
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