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6.2 Stars and the Universe

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Question 15

A galaxy is moving away from the Earth at a velocity of 4000 km/s.

What is the distance between the Earth and the galaxy? (Take Hubble's constant to be H0=2.2×10−18 s−1H_0 = 2.2 \times 10^{-18}\text{ s}^{-1}H0​=2.2×10−18 s−1)

A

5.5×10−25 m5.5 \times 10^{-25}\text{ m}5.5×10−25 m

B

5.5×10−22 m5.5 \times 10^{-22}\text{ m}5.5×10−22 m

C

1.8×1021 m1.8 \times 10^{21}\text{ m}1.8×1021 m

D

1.8×1024 m1.8 \times 10^{24}\text{ m}1.8×1024 m

Markscheme

6.2 Stars and the Universe Questions

  1. IGCSE
  2. /Physics
  3. /6.2 Stars and the Universe

104 exam-style questions on CIE IGCSE Physics 6.2 Stars and the Universe, covering 6.2.1 The Sun as a star, 6.2.2a Galaxies and astronomical distances, 6.2.2b The life cycle of a star, 6.2.3a Galaxies and the scale of the Universe, 6.2.3b Redshift, 6.2.3c The Big Bang Theory and cosmic microwave background radiation, and 6.2.3d The Hubble constant and the age of the Universe. Each one has a worked solution and a mark scheme showing where the marks go.

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