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6.2 Stars and the Universe

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Question 8

Star A has a higher surface temperature than star B, but they both emit electromagnetic radiation with the same total power.

Which statement is correct?

A

The diameter of star A is less than the diameter of star B.

B

The diameter of star A is greater than the diameter of star B.

C

The diameter of star A is equal to the diameter of star B.

D

The surface area of star A is greater than the surface area of star B.

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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