Physics (AS & A Level) · May / June 2018 · Paper 12 · Question 27
9702Hubble’s law and the Big Bang theory
An astronomer observes the light from a star that is moving away from the Earth. For the observed light, what has been increased due to the star’s motion?
- Aamplitude
- Bfrequency
- Cspeed
- Dwavelength
As printed in the paper
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Correct answer: D. wavelength
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