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Railways PYQCBT 2 2017

RRB NTPC · Question 15

Hubble's Law is related to _______.

  1. Heat

  2. Sound

  3. Astronomy

  4. Air Pressure

Show answer & explanation

Answer: (C) Astronomy

Explanation

Hubble's Law (1929) states that galaxies recede at speeds proportional to their distance from us – evidence that the universe is expanding. It belongs to astronomy.