Which is true for both α-particles and γ-rays:
Correct answer: A. They cause ionization in air
- A. They cause ionization in air
- B. They can be deflected by magnetic field
- C. They can be deflected by electric field
- D. They can penetrate a few millimeter of aluminum
Explanation
Ionization is the main interaction with the matter to detect the particle or to detect its energy. The more dense the material through which the particle move, the more ionization and shorter will be its range.
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