Question

Find out correct option which describe the Red shift of distant galaxies.

• A. Expansion of the universe
• B. The Uncertainty Principle
• C. Black holes
• D. Dark matter
• E. Superconductivity

Answer 1

Answer: (A)

Expansion of the universe

Red shift is the increase in wavelength of light observed due to Doppler Effect of light, observed when objects recede from each other.
The red shift as observed in distant galaxies suggests that the galaxies are moving away from us and from each other. This tells that the universe is expanding.