Q130 / 200 · NEET 2008 (Screening) · Physics

A particle mass $m$, charge $Q$ and kinetic energy $T$ enters a transverse uniform magnetic field of induction $\overrightarrow{\mathbf{B}}$. After 3 s the kinetic energy of the particle will be

  • A
    $3 T$
  • B
    $2 T$
  • Correct answer
    C
    $T$
  • D
    $4 T$

Solution

After passing through a magnetic field, the magnitude of its mass and velocity of the particle remain same, so its energy does not change, ie., kinetic energy will remain $T$.

Hence, the correct answer is option: 'C'.

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