CAIE A-Level Physics A2 23.2.5.0.693 T 1 2 Topic Practice

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Cambridge International AS & A Level Physics (9702)

12. Motion in a circle

13. Gravitational fields

14. Temperature

15. Ideal gases

16. Thermodynamics

17. Oscillations

18. Electric fields

19. Capacitance

20. Magnetic fields

21. Alternating currents

22. Quantum physics

23. Nuclear physics

23.1 Mass defect and nuclear binding energy

23.2 Radioactive decay

23.2.1—Fluctuations in count rate provide evidence for the random nature of

23.2.2—Radioactive decay is both spontaneous and random

23.2.3—Activity and decay constant, and recall and use A = λN

23.2.4—Half-life

23.2.5—Λ = 0.693 / t 1/2

23.2.6—The exponential nature of radioactive decay, and sketch and use the

24. Medical physics

25. Astronomy and cosmology

Practical assessment skills

Mathematical, data, formula and circuit-symbol skills

A-Level/CAIE/Physics//A2/Question Bank/23. Nuclear physics/23.2 Radioactive decay/23.2.5—Λ = 0.693 / t 1/2

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