If `g_(E ) and 8_(M)` are the accelerations due to gravity on the surfaces of the earth and the moon respectively and if Millikan oil drop experiment could be performed on the two surfaces, one will find the ratio `("electronic charge on moon")/("electronic charge on earth")` to be:

Options

A. 0
B. `g_(E )//g_(M)`
C. `g_(M)//g_(E )`
D. 1

Answer

D

Explanation

Electronic charge `=1.6xx10^(-19)C` is the fundamental property of the electron. Its value remains same on the moon as well as on earth.
`therefore ("Electronic charge on moon")/("Electronic charge on earth")=1`
So correct choice is (d).