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Astrophysics and cosmology

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Question 17

An astronomer measures the distances from Earth to four different objects in a deep-sky survey. Which of the following distances is the smallest?

A

1.65×1016 m1.65 \times 10^{16}\text{ m}1.65×1016 m

B

0.480 pc0.480\text{ pc}0.480 pc

C

1.72 ly1.72\text{ ly}1.72 ly

D

1.05×105 AU1.05 \times 10^5\text{ AU}1.05×105 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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