MCQ
How does the red shift confirms that the universe is expanding
- ADue to Wien's law
- BDue to Stefan's law
- CDue to Kirchhoff's law
- ✓Due to Doppler's effect
✓
Answer
Correct option: D.
Due to Doppler's effect
d
(d)If the light received from galaxies indicates a shift towards the red end of spectrum of light, it means that the galaxies should be receding away (Doppler's effect). Therefore we conclude that the universe is expanding.
(d)If the light received from galaxies indicates a shift towards the red end of spectrum of light, it means that the galaxies should be receding away (Doppler's effect). Therefore we conclude that the universe is expanding.
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