Question

which fundamental force holds planets in their orbits around the sun? a) magnetism b) gravity c) nuclear force d) electricity

Explanation:

To determine the fundamental force holding planets in orbit around the Sun, we analyze each option:

• Option A (Magnetism): Magnetism acts on magnetic materials or charged particles in motion, not on celestial bodies to maintain orbital motion.
• Option B (Gravity): Gravitational force is the attractive force between masses. The Sun's large mass exerts gravity on planets, keeping them in orbit.
• Option C (Nuclear Force): Nuclear forces act within atomic nuclei, not on a cosmic scale for planetary orbits.
• Option D (Electricity): Electricity involves charged particles and electric fields, not relevant for planetary orbital mechanics.

Answer:

B) Gravity