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IB Physics SL E.3.10 Radiation penetration and ionization Question Bank

Practise IB Physics SL/HL E.3.10 by applying radiation penetration and ionization concepts to exam-style physics questions.

Syllabus
First assessment 2025
Course
Physics SL
Level
SL

Exam points

  • identify the relevant physical quantity, model or diagram
  • apply the correct equation and units to the evidence
  • justify the result using conservation laws, fields or energy relationships

E.3.10—Radiation penetration and ionization question 1

[Maximum number: 4]

An experiment is carried out to determine the count rate, corrected for background radiation, when different thicknesses of copper are placed between a radioactive source and a detector. The graph shows the variation of corrected count rate with copper thickness.

Figure for Question E.3.10—Radiation penetration and ionization question 1 — IB Physics SL

Further results were obtained in this experiment with copper and lead absorbers.

Table for Question E.3.10—Radiation penetration and ionization question 1 — IB Physics SL

Comment on the radiation detected from this radioactive source.

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