CAIE A-Level Physics A2 25.2.2 The Stefan Boltzmann Law L 4 R 2 T 4 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

24. Medical physics

25. Astronomy and cosmology

25.1 Standard candles

25.2 Stellar radii

25.2.1—Wien’s displacement law λmax ∝ 1 / T to estimate the peak surface

25.2.2—The Stefan–Boltzmann law L = 4 πσr 2 T 4

25.2.3—Wien’s displacement law and the Stefan–Boltzmann law to estimate the radius

25.3 Hubble’s law and the Big Bang theory

Practical assessment skills

Mathematical, data, formula and circuit-symbol skills

A-Level/CAIE/Physics//A2/Question Bank/25. Astronomy and cosmology/25.2 Stellar radii/25.2.2—The Stefan–Boltzmann law L = 4 πσr 2 T 4

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