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A charge of 0.8 coulomb is divided into ...

A charge of 0.8 coulomb is divided into two charges `Q_(1) and Q_(2)`. These are kept at a separation of 30 cm. The force on `Q_(1)` is maximum when

A

`Q_(1)=Q_(2)=0.4C`

B

`Q_(1)=0.8, C, Q_(2)` negligible

C

`Q_(1)` negligible, `Q_(2),0.8C`

D

`Q_(1)=0.2C.Q_(2)=0.6C`

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