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MHT CET Physics question

PhysicsMoving Charges and MagnetismMHT CET

The maximum kinetic energy of protons in a cyclotron of radius 0.4 m in a magnetic field of 0.5 T is (mass of proton kg, charge of proton C)

Answer: (B)

Solution

\dfrac{q^2B^2R^2}{2m}\dfrac{(1.6×10^{-19})^2(0.5)^2(0.4)^2}{2×1.67×10^{-27}}$≈3.07×1

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Question ID VK-078673