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Question: Answered & Verified by Expert
A proton and an alpha particle both enter a region of uniform magnetic field B, moving at right angles to the field B. if the radius of circular orbits for both the particles is equal and the kinetic energy acquired by proton is 1 MeV, the energy acquired by the alpha particle will be:
PhysicsMagnetic Effects of CurrentNEETNEET 2015 (Phase 2)
Options:
  • A 0.5 MeV
  • B 1..5 MeV
  • C 1 MeV
  • D 4 MeV
Solution:
2888 Upvotes Verified Answer
The correct answer is: 1 MeV
R=mVqB=2mkEqB

Since R is same so KE q2m

So KE of α particle will be 224=1 MeV

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