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7.2 The Universe and red-shift

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Question 19
F

A spectral line has a laboratory wavelength of 600 nm600\ \mathrm{nm}600 nm. It is observed at 618 nm618\ \mathrm{nm}618 nm in light from a galaxy.

Which gives the wavelength change and the galaxy's motion relative to the Earth?

[1]
A

Increase of 18 nm18\ \mathrm{nm}18 nm; towards the Earth

B

Decrease of 18 nm18\ \mathrm{nm}18 nm; away from the Earth

C

Increase of 18 nm18\ \mathrm{nm}18 nm; away from the Earth

D

Decrease of 18 nm18\ \mathrm{nm}18 nm; towards the Earth

Markscheme

7.2 The Universe and red-shift Questions

  1. GCSE
  2. /Physics
  3. /7.2 The Universe and red-shift

94 exam-style questions on Edexcel GCSE Physics 7.2 The Universe and red-shift, covering 7.2.1 Big Bang and Steady State theories, 7.2.2 Evidence for the Big Bang, 7.2.3 The Doppler effect and red-shift, 7.2.4 Red-shift as evidence for an expanding Universe, and 7.2.5 The CMB and the accepted model. Each one has a worked solution and a mark scheme showing where the marks go.

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