What can an electric field deflect?

What can an electric field deflect? Correct Answer alpha particle

Types of radioactive rays:

  • Radioactive rays are classified based on the behavior of the radioactive rays in electric and magnetic fields.
  • Three types: α rays, β rays, and γ rays.


The separation of the three types of radioactive rays by the action of an electric field is given below:

Additional Information

The table below shows the characteristics of radioactive rays:

 

α rays

β rays

γ rays

Charge

Positively charged (+ve)

Negatively charged (-ve)

Uncharged

Nature

α-rays consist of streams of +vely charged particles called α particles.

Each α-particle has 2 units of +ve charge and 4 amu mass.

Each α-particle is a helium nucleus.

Consist of - vely charged particles called β-particles.

Each β-particle has a mass equal to an electron and carries one unit of -ve charge.

Each β-particle is an electron.

γ-rays consist of electromagnetic radiations of very short wavelength.

 

 

 

Velocity

α-rays travel with about one-tenth that of the velocity of light.

β-rays travel with velocities ranging from 33-99% of the velocity of light.

γ-rays travel with the velocity of light.

Penetrating power

Least penetrating power.

β-rays are 100 times more penetrating than α rays. 

γ-rays have the highest penetrating power among the three rays.

Ionizing power

Because of the high momentum they possess, α-rays can cause ionization of gases.

Because of smaller masses of β-particles, the ionizing power is less than α rays.

γ-rays have the least ionizing power among the three types of radioactive rays.

Action on a photographic plate

α-rays can affect a photographic plate.

β-rays can affect a photographic plate.

γ-rays can affect a photographic plate.

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