railway RPF Constable Mock Test Series 2024 Physics Nuclear Physics Fusion and Fission

न्यूट्रॉन किसके द्वारा खोजा गया था?

1
जेम्स चाडविक
2
अर्नेस्ट रदरफोर्ड
3
जे जे थॉमसन
4
जॉन डाल्टन
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