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Two charged sphere of radii R1 andR2 hav...

Two charged sphere of radii `R_1` and`R_2` have equal surface charge density. The ratio of their potential is

A

`(R_1/R_2)^2`

B

`(R_2/R_1)^2`

C

`R_2/R_1`

D

`R_1/R_2`

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