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Standard XII

Physics

Circular Kinematics

A electron wi...

Question

A electron with kinetic energy $k$ enters a region (i) uniform magnetic field (ii) non-uniform magnetic field and comes out with kinetic energy $k_{1}$ and $k_{2}$ respectively. What is relation between $k_{1}, k_{2}$ and $k$ ?

K_{1} > K_{2} > K

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K_{1} = K_{2} > K

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K_{1} = K_{2} = K

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K_{1} < K_{2} < K

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Solution

The correct option is C $K_{1} = K_{2} = K$
Any type of magnetic field can not change kinetic energy of charged particle. So $K_{1} = K - 2 = K$

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A electron with kinetic energy k enters a region (i) uniform magnetic field (ii) non-uniform magnetic field and comes out with kinetic energy k1 and k2 respectively. What is relation between k1,k2 and k?

The correct option is C K1=K2=KAny type of magnetic field can not change kinetic energy of charged particle. So K1=K−2=K

A electron with kinetic energy $k$ enters a region (i) uniform magnetic field (ii) non-uniform magnetic field and comes out with kinetic energy $k_{1}$ and $k_{2}$ respectively. What is relation between $k_{1}, k_{2}$ and $k$ ?

The correct option is C $K_{1} = K_{2} = K$
Any type of magnetic field can not change kinetic energy of charged particle. So $K_{1} = K - 2 = K$