JEE Main 2020 Physics question

Proton with kinetic energy of 1 MeV moves from south to north. It gets an acceleration of m/ by an applied magnetic field (west to east). The value of magnetic field : (Rest mass of proton is kg)

• (A)0.71 mTCorrect
• (B)7.1 mT
• (C)0.071 mT
• (D)71 mT