Physics · Electromagnetic Waves
निम्नलिखित में से किसने एक्स-रे (X-Ray) की खोज की थी?
- 1जेम्स चैडविक
- 2जॉन नेपियर
- 3माइकल फैराडे
- 4विल्हेम रॉन्टगन✓
सही उत्तर देखें
विल्हेम रॉन्टगन
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