UPSC CAPF AC 2025 Paper 1 · Question 107
Question 107 of the UPSC CAPF (AC) 2025 Paper I (3 August 2025). Try it first, then open the answer and explanation.
Which one among the following laws states that magnetic monopoles do not exist?
- Gauss' law
- Newton's law
- Pascal's law
- Ampere's law
निम्नलिखित में से कौन-सा नियम यह बताता है कि चुम्बकीय एकध्रुवों (magnetic monopoles) का अस्तित्व नहीं है?
- गॉस का नियम
- न्यूटन का नियम
- पास्कल का नियम
- ऐम्पियर का नियम
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Answer: (1) Gauss' law
उत्तर: (1) गॉस का नियम
Gauss' law for magnetism says the net magnetic flux through any closed surface is zero, because magnetic field lines always form closed loops; hence an isolated north or south pole (a magnetic monopole) cannot exist. Ampere's law relates a magnetic field to the current producing it, while Newton's and Pascal's laws deal with motion and fluid pressure.