Physics · Magnetism
स्थायी चुंबक बनाने के लिए निम्नलिखित में से कौन सी सामग्री अनुपयुक्त है?
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- 4नरम लोहा (सॉफ्ट आयरन)✓
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नरम लोहा (सॉफ्ट आयरन)
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