Question

-3 An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.55 x 104 NC-1 in Millikan's oil drop experiment. The density of the oil is 1.26 g cm3. Estimate the radius of the drop (g = 9.81 m 5-2 and e = 1.60 x 10-19 C).
(a) Zero
(b) 9.81 x 10-7 m
(C) 8.91 x 10-7
(d) 1.89 x 10-7 m X X Х m X​

Answer 1

Answer:

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Answer 2

C

Explanation:

when metal react with oxygen to get metal oxide then this reaction take metal oxide lose and gain of electron take place in this question so the answer is 8.91* (10)-7