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Railways PYQCBT 1 2016

RRB NTPC · Question 6

_______ is a unit of length, roughly the distance from Earth to the Sun.

  1. Kilometres

  2. Astronomical unit

  3. Kelvin

  4. Joule

Show answer & explanation

Answer: (B) Astronomical unit

Explanation

The astronomical unit (AU) is a unit of length equal to about 149.6 million km, roughly the average distance from the Earth to the Sun. It is used to measure distances within the Solar System.