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6.2.3a Galaxies and the scale of the Universe

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Question 39

The bright star Altair is located at a distance of approximately 16.7 light-years from Earth.

Which of the following statements are correct?

  1. Telescope images of Altair show it as it was 16.7 years ago.
  2. If an astronaut near Altair sent a radio message to Earth, the signal would take 16.7 years to arrive.
  3. Altair is located outside the Milky Way galaxy.
A

1, 2 and 3

B

1 and 2 only

C

1 and 3 only

D

2 and 3 only

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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