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The variation of potential with distance...

The variation of potential with distance r from a fixed point-is shown in figure. The electric field at r = 3 cm and r = 5 cm are respectively

A

0,2 `V//cm`

B

2 `V//cm,-2V//cm`

C

`0,-2V//cm`

D

`2V//cm,0`

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A
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