Mass of electron is …………….. times less than that of proton.
Mass of electron is …………….. times less than that of proton.
A) 1200
B) 1836
C) 1830
D) 1870
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Mass of electron is …………….. times less than that of proton.
A) 1200
B) 1836
C) 1830
D) 1870