Correct Option
The correct option is (c) 1 and 3 only.
Explanation
The Sun is the central star of the Solar System. It accounts for more than 99% of the total mass of the Solar System and governs the motion of celestial bodies through its gravitational field.
Statement-wise Analysis
- Statement 1 is Correct: The Sun is the ultimate source of heat and light for the entire Solar System. This energy is generated through nuclear fusion reactions (converting hydrogen into helium) occurring in its core.
- Statement 2 is Incorrect: The Sun provides a pulling force (gravitational force) that binds the Solar System together. It is this gravitational pull that keeps the planets, asteroids, and comets in their respective orbits around the Sun. It does not provide a repulsive force to expand the system.
- Statement 3 is Correct: The Sun is located approximately 150 million kilometers away from the Earth. This average distance is defined as one Astronomical Unit (AU). Light from the Sun takes about 8 minutes to reach the Earth.
Key Takeaway: The Sun acts as the gravitational anchor of the Solar System, providing the binding force that keeps celestial bodies in orbit, rather than a repulsive force.