Particle accelerators and detectors Quiz
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5 questions, one answer each
Each answer is checked as you go, with why.
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1. A proton is accelerated from rest through 5.0 kV. What kinetic energy does it gain?
- A. 8.0 × 10⁻¹⁶ J
- B. 3.2 × 10⁻¹⁷ J
- C. 5.0 × 10³ J
- D. 1.6 × 10⁻¹⁹ J
2. Why does the length of the drift tubes in a linac increase along the accelerator?
- A. The p.d. increases
- B. The particles speed up and travel further in each half cycle
- C. The particles slow down
- D. The magnetic field gets weaker
3. Which is true of the magnetic field in a cyclotron?
- A. It accelerates the particles in the gap
- B. It does work on the particles
- C. It makes the particles move in circular paths
- D. It reverses every half cycle
4. A particle's track in a detector has a larger radius than another's. Both have the same charge. What does this suggest?
- A. It has less momentum
- B. It has more momentum
- C. It is neutral
- D. It has the opposite charge
5. Which particle would leave no track in a detector?
- A. An electron
- B. A proton
- C. A neutron
- D. An alpha particle