Physics · Famous Scientists and Discoveries
जगदीश चंद्र बोस का प्रमुख योगदान/आविष्कार क्या है?
- 1रेडियम तथा पोलोनियम की खोज
- 2अतिलघु रेडियो तरंगें तथा क्रेस्कोग्राफ✓
- 3विद्युत-चुंबकीय तरंगें
- 4प्रकाश - एक विद्युत-चुंबकीय तरंग
सही उत्तर देखें
अतिलघु रेडियो तरंगें तथा क्रेस्कोग्राफ
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