Figure shows three spherical and equipotential surface 1,2 and 3 round a point charge q. The potential difference `V_(1) - V_(2) = V_(2) - V_(3)`. If `t_(1) and t_(2)` be the distance between them. Then

Options

A. `t_(1) = t_(2)`
B. `t_(1) gt t_(2)`
C. `t_(1) lt t_(2)`
D. `t_(1) le t_(2)`

Answer

C

Explanation

`V_(1) - V_(2) = kq ((1)/(r_(1)) - (1)/(r_(2)))`
`r_(2) - r_(1) = ((V_(1) - V_(2) r_(1) r_(2))/(kq))`, but `(r_(2) - r_(1)) = t`
`:. tau alpha r_(1) r_(2)` If P.D is constant then `(r_(2) - r_(1)) = t`