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When proton of KE = 1.0 MeV moving in So...

When proton of KE = 1.0 MeV moving in South to North direction enters the magnetic field (from West to East direction), it accelerates with `a = 10^(12) m/s^2` . The magnitude of magnetic field is-

A

`0.71 mT`

B

`7.1 mT`

C

`71 mT`

D

`710 mT`

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A
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