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6.2.3a Galaxies and the scale of the Universe

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Question 9

The galaxy Pegasus III is at a distance of 2.4 × 1021 m from Earth.

What is this distance in light-years?

A

3.9×105 light-years3.9 \times 10^5\text{ light-years}3.9×105 light-years

B

2.5×105 light-years2.5 \times 10^5\text{ light-years}2.5×105 light-years

C

3.9×106 light-years3.9 \times 10^6\text{ light-years}3.9×106 light-years

D

2.5×106 light-years2.5 \times 10^6\text{ light-years}2.5×106 light-years

Markscheme

6.2.3a Galaxies and the scale of the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2.3a Galaxies and the scale of the Universe

59 exam-style questions on CIE IGCSE Physics 6.2.3a Galaxies and the scale of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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