A charged particle is moving in a uniform magnetic field in a circular path with radius ' R '. When the energy of the particle is doubled, then the new radius will be

Step-by-step solution

Force on a charged particle moving in a circular array ll & path, F=q v B= m v^2 r & r= m v q B = 2 m(K E) q B & r K E & R R^ = K E₁ K E₂ & R R^ = K E₁ 2 K E₁ & R^ = 2 R array