Cambridge AS & A Level Physics
25.1Standard candles
Standard candles in Cambridge AS & A Level Physics: what the syllabus expects you to know, the learning objectives and how to practise.
Subtopic22 practice questions1 lesson
Learning objectives
What the syllabus expects you to be able to do.
- 25.1.1Define luminosity as the total power radiated by a star.
- 25.1.2Recall and use the inverse square law for radiant flux intensity.
- 25.1.3Recognise a standard candle as an object of known luminosity.
- 25.1.4Explain how standard candles give distances to galaxies.
Lessons
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Luminosity, radiant flux intensity and standard candles
40 min
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Sample question
A sample question on this topic. Answer it, check it, then read the worked answer.
Turn Standard candles into a strength.
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