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6.2.3a Galaxies and the scale of the Universe

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Question 2

According to Hubble's law, the recessional velocity v v\,v of a distant galaxy is proportional to its distance d d\,d from Earth, expressed as:

v=H0d v = H_0 d v=H0​d

where H0 H_0\,H0​ is the Hubble constant. Assuming the expansion rate of the Universe has been constant since the Big Bang, which of the following is an estimate for the age of the Universe?

A

H0H_0H0​

B

1H0\frac{1}{H_0}H0​1​

C

dH0\frac{d}{H_0}H0​d​

D

H02H_0^2H02​

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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