A telescope is to observe visible light from faint stars. Both proposed sites have clear skies, but one site is near a brightly lit city and the other is remote. Which choice and reason are correct?
The city site, because background light increases the star's signal.
The remote site, because it is outside most of the atmosphere.
The remote site, because less background light masks the star's signal.
The city site, because background light reduces atmospheric absorption.
75 exam-style questions on Edexcel GCSE Physics 7.3 Stars, covering 7.3.1 Evolution of stars similar to the Sun, 7.3.2 Evolution of massive stars, and 7.3.3 Observing the Universe. Each one has a worked solution and a mark scheme showing where the marks go.