Physics · Inventions and Discoveries
विल्हेल्म रौंटजन ने निम्नलिखित में से किसकी खोज की थी?
- 1रेडियो
- 2विद्युत मोटर
- 3एक्स-रे (X-Rays)✓
- 4विद्युत बल्ब
सही उत्तर देखें
एक्स-रे (X-Rays)
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