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The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force andstrong nuclear force. With reference to them, which one of the following statements is not correct?
  • a)
    Gravity is the strongest of the four
  • b)
    Electromagnetism acts only on particles with an electric charge
  • c)
    Weak nuclear force causes radioactivity
  • d)
    Strong nuclear force holds protons and neutrons inside the nucleus of an atom
Correct answer is option 'A'. Can you explain this answer?
Most Upvoted Answer
The known forces of nature can be divided into four classes, viz., gra...
Gravity is the least strong of the forces of nature. So option a) is incorrect. 
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The known forces of nature can be divided into four classes, viz., gra...
Gravity, the weakest of the four forces, is about 10-36 times the strength of the strong force. This weakness is easily demonstrable on a dry day, when we rub a comb across shirt to give it static electricity and when we hold it over a piece of paper on a desk the piece of paper lifts off the desk. It takes an entire planet to keep the paper on the desk, but this force is easily overcome with everyday materials employing the electromagnetic force.
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The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force andstrong nuclear force. With reference to them, which one of the following statements is not correct?a)Gravity is the strongest of the fourb)Electromagnetism acts only on particles with an electric chargec)Weak nuclear force causes radioactivityd)Strong nuclear force holds protons and neutrons inside the nucleus of an atomCorrect answer is option 'A'. Can you explain this answer? for UPSC 2026 is part of UPSC preparation. The Question and answers have been prepared according to the UPSC exam syllabus. Information about The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force andstrong nuclear force. With reference to them, which one of the following statements is not correct?a)Gravity is the strongest of the fourb)Electromagnetism acts only on particles with an electric chargec)Weak nuclear force causes radioactivityd)Strong nuclear force holds protons and neutrons inside the nucleus of an atomCorrect answer is option 'A'. Can you explain this answer? covers all topics & solutions for UPSC 2026 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The known forces of nature can be divided into four classes, viz., gravity, electromagnetism, weak nuclear force andstrong nuclear force. With reference to them, which one of the following statements is not correct?a)Gravity is the strongest of the fourb)Electromagnetism acts only on particles with an electric chargec)Weak nuclear force causes radioactivityd)Strong nuclear force holds protons and neutrons inside the nucleus of an atomCorrect answer is option 'A'. Can you explain this answer?.
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