Question

What did Robert Millikan's oil drop experiment prove?

A. Atoms are composed of positive charges.
B. It determined the actual mass of the electron.
C. Matter can be conserved.
D. Atoms can be neither created nor destroyed.

Answer 1

Robert Millikan was a well known experimental physicist. Robert Millikan's oil drop experiment proved that it determined the actual mass of the electron.

Answer 2

Robert Millikan's oil drop experiment proved that it determined the actual mass of the electron. Robert Millikan was a well known experimental physicist.