A) J.J. Thomson
B) Neil Bohr
C) James Chadwick
D) Millikan
Correct Answer: A
Solution :
The specific charge \[(e/m)\] on electron was first of all determined by JJ. Thomson. Magnitude of charge on electron\[=1.6\times {{10}^{-19}}\] coulomb\[=4.8\times {{10}^{-10}}e.s.u\]
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