Dual Nature Of Light Question 56
Question: In a Millikan’s oil drop experiment the charge on an oil drop is calculated to be $ 6.35\times {{10}^{-19}}C $ . The number of excess electrons on the drop is [MNR 1998]
Options:
A) 3.9
B) 4
C) 4.2
D) 6
Show Answer
Answer:
Correct Answer: B
Solution:
$ n=\frac{Q}{e}=\frac{6.35\times {{10}^{-19}}}{1.6\times {{10}^{-19}}}\approx 4 $
BETA
