Standard candles
25.1What the syllabus asks of you
- understand the term luminosity as the total power of radiation emitted by a star
- recall and use the inverse square law for radiant flux intensity F in terms of the luminosity L of the source F = L / (4πd²)
- understand that an object of known luminosity is called a standard candle
- understand the use of standard candles to determine distances to galaxies
Read the notes first
Chapter 25: Standard candles
Drill this topic
All 11 questions on Standard candles, untimed — answer on paper, then mark yourself against the mark scheme.
Make a worksheet
Choose the years and how many questions, then print it with the answers on separate pages.
11 questions
These are structured questions, answered in working rather than by picking an option, so they are not listed here one by one. The drill above puts each in front of you with its mark scheme to check against.