Physics · Oct / Nov 2025 · Paper 12 · Question 40
5054The Universe
A teacher asks two students to describe redshift. Student 1 says: It is a decrease in the observed wavelength of electromagnetic radiation from stars. Student 2 says: It occurs because stars and galaxies move away from the Earth. Which students are correct?
- Aboth student 1 and student 2
- Bstudent 1 only
- Cstudent 2 only
- Dneither student 1 nor student 2
As printed in the paper
Show the answer
Correct answer: C. student 2 only
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