Choose the correct options for the following questions.
Charge on electron was discovered by:
Difficulty: Easy
A:
Millikan
B:
Crook
C:
Nel Bohr
D:
Rutherford
Proton was dicovered by:
Difficulty: Easy
A:
Chadwick
B:
J.J. Thomson
C:
Millikan
D:
Goldstein
Which one of the following particles has a mass 1/1836 time, that of hydrogen?
Difficulty: Easy
A:
Neutron
B:
Proton
C:
Electron
D:
Positron
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