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Railways PYQCBT 1 2016

RRB NTPC · Question 96

What is the shape of the orbit of the planets? A. Round B. Straight line C. Elliptical D. Stretched out circles

  1. A

  2. D

  3. C

  4. B

Show answer & explanation

Answer: (B) D

Explanation

By Kepler's first law, planets move round the Sun in elliptical orbits, i.e. ovals, or 'stretched-out circles', with the Sun at one focus. The official key marks 'stretched-out circles', which describes the same elliptical shape in everyday words.