1.

Two coaxial solenoids of different radii carry current I in the same direction. Let F_(1) be the magnetic force on the inner solenoid due to the outer one and F_(2) be the magnetic force on the outer solenoid due to the inner one. Then

Answer»

`F_(1)` is radily OUTWARDS and `F_(2)=0`
`F_(1)=F_(2)=0`
`F_(1)` is radily INWARDS and `F_(2)` is radily outwards
`F_(1)` is radily inwards and `F_(2) = 0`

ANSWER :B


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