The Light from a Distant Star Is That Has a Peak

question 20

Multiple Choice

The light from a distant star is that has a peak in its intensity spectrum at 620 nm and is moving at a rate of 0.024c towards Earth.What is the wavelength of the peak of its intensity spectrum,as observed on Earth?

• A) 605 nm
• B) 591 nm
• C) 650 nm
• D) 635 nm

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