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Astrophysics and cosmology

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Question 15

During the evolution of the universe, different forms of matter formed at distinct stages as the temperature decreased.

Which of the following forms of matter had already formed and existed at 1.0 × 10-3 s after the Big Bang, but had not yet formed at 1.0 × 10-5 s?

A

Quarks

B

Helium nuclei

C

Hadrons

D

Neutral atoms

Markscheme

Astrophysics and cosmology Questions

  1. A Level
  2. /Physics
  3. /Astrophysics and cosmology

66 exam-style questions on OCR A A Level Physics Astrophysics and cosmology, covering Stars, Electromagnetic radiation from stars, and Cosmology. Each one has a worked solution and a mark scheme showing where the marks go.

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