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Paper 4Theory (Extended)3 marks
The Cosmic Microwave Background Radiation (CMBR) provides insights into the early universe.
Description
CMBR and Universe Expansion
The CMBR has shifted into the microwave region due to the expansion of the universe, which affects the wavelengths of the radiation.
- a[3]
Explain how the expansion of the universe affects the CMBR.
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