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6.2 Stars and the Universe

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Question 61

An astronomical observation detects light from a distant galaxy. Due to cosmological redshift, the radiation has shifted from the ultraviolet region of the electromagnetic spectrum to the visible red region.

How does this shift affect the wavelength and speed of the radiation in a vacuum?

A

Wavelength: decreased; Speed: decreased

B

Wavelength: increased; Speed: stayed the same

C

Wavelength: increased; Speed: decreased

D

Wavelength: decreased; Speed: stayed the same

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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