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A proton enters a magnetic field of flux...

A proton enters a magnetic field of flux density `2.0 weber/m^2` with a velocity of `2 xx 10^7ms^1` at an angle of `30^@` with the field,the force on the proton will be

A

`0.032 xx 10^-12 N`

B

`0.32 xx 10^-12 N`

C

`3.2 xx 10^-12 N`

D

`32 xx 10^-12 N`

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