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________ can be accelerated by cyclotron.
1. The electron
2. Free ion
3. Neutron
4. None of these

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Correct Answer - Option 4 : None of these

Concept:

Cyclotron:

  • cyclotron is a device used to accelerated positively charged particles (like α-particles, deuterons, etc.) to acquire enough energy to carry out nuclear disintegration, etc.
  • It is based on the fact that the electric field accelerates a charged particle and the magnetic field keeps it revolving in circular orbits of constant frequency.
  • The cyclotron frequency is given as,

\(⇒ f=\frac{Bq}{2\pi m}\)

Where B = magnetic field intensity, q = charge, and m = mass of the charged particle

Explanation:

  • We know that a cyclotron is a device used to accelerated positively charged particles (like α-particles, deuterons, etc.).
  • An electron cannot be accelerated by a cyclotron, because it has a very small mass. Due to this, its speed becomes very high and it quickly goes out of the step with the oscillating electric field.
  • A neutron cannot be accelerated by a cyclotron, because cyclotron can accelerate only the charged particle and neutron is not a charged particle.

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