KCET · Physics · Magnetic Properties of Matter
Needles \( N_{1}, N_{2} \) and \( N_{3} \) are made of a ferromagnetic, a paramagnetic and a diamagnetic
substance respectively. A magnet when brought close to them will
- A Attract all three of them
- B Attract \( N_{1} \) strongly,\( N_{2} \) weakly and repel \( N_{3} \) weakly
- C Attract \( N_{1} \) strongly but repel \( N_{2} \) and \( N_{3} \) weakly
- D Attract \( N_{1} \) and \( N_{2} \) strongly but \( N_{2} \) repel \( N_{3} \)
Answer & Solution
Correct Answer
(B) Attract \( N_{1} \) strongly,\( N_{2} \) weakly and repel \( N_{3} \) weakly
Step-by-step Solution
Detailed explanation
Given, \( N_{1} \) is ferromagnetic, \( N_{2} \) is paramagnetic; \( N_{3} \) is diamagnetic.
Therefore, \( N_{1} \) is attracted strongly by magnet. \( N_{2} \) is attracted weakly by magnet.
\( N_{2} \) is weakly repelled by magnet.
Therefore, \( N_{1} \) is attracted strongly by magnet. \( N_{2} \) is attracted weakly by magnet.
\( N_{2} \) is weakly repelled by magnet.
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