Question

1. gravity acts between: a) only planets and stars b) objects that emit light c) all objects with mass d) charged particles only

Explanation:

Gravity is a fundamental force of attraction that exists between any two objects that have mass. Option A is incorrect because gravity acts between all objects with mass, not just planets and stars (e.g., gravity acts between a book and the Earth, or between two people). Option B is incorrect because emitting light has nothing to do with gravity; objects like planets (which don't emit light) still experience gravity. Option D is incorrect because gravity is not related to charge; it depends on mass, while charged particles are related to electromagnetic forces. So the correct option is C as it aligns with the definition of gravity (attraction between all objects with mass).

Answer:

C. All objects with mass