A LevelPhysicsEdexcelExam Questions8. Nuclear & Particle PhysicsExploring the Structure of Matter

Exploring the Structure of Matter (Edexcel A Level Physics): Exam Questions

Exam code: 9PH0

2 hours10 questions

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Exploring the Structure of Matter

1
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1 mark

Electric and magnetic fields can be used in particle accelerators.

Which row in the table correctly describes the use of electric and magnetic fields in the particle accelerator indicated?

 

Particle accelerator

 Magnetic field

Electric field

A

cyclotron

not used

used to accelerate particles

B

cyclotron

used to accelerate particles

used to accelerate particles

C

linac

used to accelerate particles

not used

D

linac

used to accelerate particles

used to accelerate particles

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    2
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    The solid line shows the path of an alpha particle as it passes close to a nucleus. 

    q10-june-2019-9ph0-01-edexcel-as-a-level-phy

    Another alpha particle approaches the nucleus with the same initial kinetic energy.

    Which dashed path is possible for this alpha particle?  

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      3
      1 mark

      The diagram shows particle tracks in a bubble chamber. A photon enters the chamber and collides with a stationary neutral hydrogen atom. An electron is ejected from the atom, and an electron–positron pair is produced.

      Bubble chamber tracks showing two tightly wound spiral tracks curling in opposite directions and a nearly straight track exiting to the right.

      Which of the following is a valid conclusion from these tracks?

      • The photon enters the chamber from the right

      • The momentum of the ejected electron is greater than the momentum of the electron–positron pair

      • The magnetic field is directed out of the page

      • Charge is not conserved in this interaction

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