Q. From the following, what charges can be present on oil drops in Millikan’s experiment (Here $e$ is the electronic charge)
A) Zero, equal to the magnitude of charge on $\alpha -$particle
B) $2e,\ 1.6 \times 10^{- 18}C$
C) $1.6 \times 10^{- 19}C,\ 2.5e$
D) $1.5e,\ e$
Explanation
(b) In Milikan’s experiment, the charges present on the oil drops are the integral multiples of electronic charge, so $2e$ and $10e(1.6 \times 10^{- 18}C)$ charges are present
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.