Physics · Magnetism
निम्नलिखित में से कौन सा एक प्राकृतिक चुंबक है?
- 1तांबा (Copper)
- 2सिलिकॉन (Silicon)
- 3जस्ता (Zinc)
- 4लोडस्टोन (Fe3O4)✓
सही उत्तर देखें
लोडस्टोन (Fe3O4)
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