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Astrophysics and cosmology

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Question 34

In astrophysics, distance measurements can be expressed in meters (m\text{m}m), parsecs (pc\text{pc}pc), light-years (ly\text{ly}ly), or astronomical units (AU\text{AU}AU). Which of the following distances is the smallest?

A

1.85×1017 m1.85 \times 10^{17}\text{ m}1.85×1017 m

B

6.15 pc6.15\text{ pc}6.15 pc

C

18.8 ly18.8\text{ ly}18.8 ly

D

1.24×106 AU1.24 \times 10^6\text{ AU}1.24×106 AU

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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