Which of the following is the evidence to show that there must be force acting on Earth and directed towards the Sun?
Correct answer: B. Revolution of the Earth round the Sun
- A. Deviation of the falling bodies towards east
- B. Revolution of the Earth round the Sun
- C. Phenomenon of day and night
- D. Apparent motion of Sun round the Earth
Explanation
Option B is a key piece of evidence. The fact that Earth revolves around the Sun is a result of gravitational attraction between the Earth and the Sun. According to Kepler's laws of planetary motion and Newton's law of universal gravitation, there must be a force acting on Earth directed towards the Sun to keep it in orbit.
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