Four fundamental forces of nature

Option (a) is incorrect. Gravity is actually the weakest of the four fundamental forces, not the strongest. In fact, the strong nuclear force is the strongest, followed by electromagnetism, then the weak nuclear force, with gravity being the weakest. Option (b) is correct: electromagnetism acts on charged particles. Option (c) is correct: the weak nuclear force is responsible for radioactive decay and beta decay. Option (d) is correct: the strong nuclear force binds protons and neutrons together in the nucleus, overcoming the electromagnetic repulsion between protons. The question asks which statement is NOT correct, making (a) the right answer. > Fundamental Forces Ranking: In decreasing order of strength: Strong Nuclear Force > Electromagnetism > Weak Nuclear Force > Gravity. Gravity is the weakest, not strongest. Answer: (a).